It's about eight-and-a-half times as heavy as a cubic meter of Snow
In other words, the weight of a cubic meter of Snow is 0.110 times 31,000,000 grains.(Freshly fallen, standard conditions; measurements taken in Norway, 1965-68)
One cubic meter of freshly fallen snow under standard conditions weighs an average of 3,500,000 grains. Assembled in 2008, the world record largest snowman was constructed of 91,000,000,000 grains of snow and stood 37.21 m (122.1 ft) tall.
It's about ten times as heavy as The Heart of a Blue Whale
It's about twelve times as heavy as a Reindeer
In other words, 31,000,000 grains is 12.10 times the weight of a Reindeer, and the weight of a Reindeer is 0.0826 times that amount.(for Rangifer tarandus granti, adult, bull) (a.k.a. Caribou) ()Rangifer tarandus)
An adult, male reindeer weighs between 2,550,000 grains. Reindeer undertake a lengthy annual migration, with some herds traveling up to 5,000 km.
To all those observing, Merry Christmas from the Measure of Things.
It's about thirteen times as heavy as a Panda Bear
In other words, the weight of a Panda Bear is 0.077 times 31,000,000 grains.(a.k.a. Giant Panda, Ailuropoda melanoleuca)(Adult, male)
An adult, male Giant Panda weighs up to 2,300,000 grains. Despite having the digestive system of a carnivore, the panda eats only bamboo and must eat up to 99,000 grains of it per day to compensate for the limited energy the plant provides.
It's about twenty times as heavy as a Kangaroo
It's about thirty times as heavy as a Beer Keg
In other words, 31,000,000 grains is 27.590 times the weight of a Beer Keg, and the weight of a Beer Keg is 0.03625 times that amount.(for US half-barrel, full keg; draft beer; including keg itself, stainless steel)
A typical, half-barrel beer keg weighs 1,123,000 grains when full. A keg of this size contains 15.5 gallons of beer, or the equivalent of 6.8 cases.
It's about one-thirty-fifth as heavy as The Space Shuttle
In other words, the weight of The Space Shuttle is 36 times 31,000,000 grains.(for Endeavour, a.k.a. OV-105, a.k.a. Orbiter Vehicle-105) (empty weight, excluding main engines)
When empty, the space shuttle Endeavour weighs 1,100,000,000 grains. The shuttle's spacious cargo bay carried the Chandra X-ray Observatory into orbit in 1999 — a payload that weighed 300,000,000 grains.