It's about 40 times as heavy as an Octopus
In other words, the weight of an Octopus is 0.025 times 31,000,000 grains.(for Giant Pacific Octopus, Enteroctopus) (Adult, average)
The adult North Pacific Giant Octopus usually weighs around 770,000 grains. It is the largest octopus species and is known for its considerable intelligence, including the ability to open jars, solve mazes, and mimic other octopuses.
It's about 45 times as heavy as a Toilet
In other words, 31,000,000 grains is 46.10 times the weight of a Toilet, and the weight of a Toilet is 0.0217 times that amount.(KOHLER Round front sitting flush toilet, model #K-11471-0)
The weight of a typical round front sitting flush toilet is 673,000 grains. The Indian town of Musiri in Tamil Nadu state features the world's only paying toilet, which rewards its users up to 10¢ Indian (10 paisas) per visit and uses the waste for compost and fertilizer.
It's about one-fiftieth as heavy as a Blue Whale
In other words, 31,000,000 grains is 0.0192 times the weight of a Blue Whale, and the weight of a Blue Whale is 52.10 times that amount.(Balaenoptera musculus)
Blue whales weigh between 1,610,000,000 grains. The largest mammal to have ever lived, blue whales feed almost exclusively on krill — tiny invertebrates weighing about 15.40 grains each.
It's about 70 times as heavy as a Dalmatian
In other words, 31,000,000 grains is 68.10 times the weight of a Dalmatian, and the weight of a Dalmatian is 0.0147 times that amount.(a.k.a. Dalmatinac, a.k.a. Carriage Dog, a.k.a. Spotted Coach Dog, a.k.a. Firehouse Dog) (FCI standard; male)
The Fédération Cynologique Internationale (FCI) calls for Dalmatians to weigh between 455,000 grains. The association of the breed with fire departments (and similarly with Budweiser Beer and its team of Clydesdales) stems from their affinity for horses, having been used historically as carriage dogs capable of guiding horse-drawn fire engines to the sites of blazes.
It's about one-eightieth as heavy as a House
In other words, 31,000,000 grains is 0.0129 times the weight of a House, and the weight of a House is 77.50 times that amount.(149 sq. m, single-level, unfurnished)
A 149 sq. m (1,600 sq. ft), single-story, unfurnished house (without extensive masonry) of the type commonly found in America would weigh approximately 2,410,000,000 grains, based on the weight of the included materials. In contrast, a yurt — a type of dwelling structure popular among nomadic peoples of East Asia — typically weighs less than 7,100,000 grains.
It's about 150 times as heavy as a Gold Bar
In other words, 31,000,000 grains is 161.45833330 times the weight of a Gold Bar, and the weight of a Gold Bar is 0.006193548388 times that amount.(London Good Delivery bar)
A "London Good Delivery" gold bar — the variety commonly held by Central Banks — should weigh 192,000 grains. The largest gold bar ever produced was minted by Mitsubishi Materials Corporation (a sibling company of the auto manufacturer) in 2005 and weighed 3,858,089.5880 grains.
It's about 200 times as heavy as a Dachshund
In other words, the weight of a Dachshund is 0.005 times 31,000,000 grains.(a.k.a. "Wiener dog", a.k.a. Teckel, a.k.a. Dackel, a.k.a. "hot dog dog", a.k.a. "sausage dog", a.k.a. "doxie") (FCI standard; standard size)
The Fédération Cynologique Internationale (FCI) calls for dachshunds to weigh about 100,000 grains. Despite of their small size, a 2008 survey conducted by the University of Pennsylvania named dachshunds as the most aggressive dog breed.