It's about the number of Vertebrae in a Snake's Body.
It's about the number of Sesame Seeds on a Big Mac bun.
(McDonald's sandwich; approximate figures)
It's about one-and-one-tenth times the number of Manned Flights to Space.
In other words, 350 is 1.120 times the count of a Manned Flights to Space, and the count of a Manned Flights to Space is 0.8930 times that amount.(2016 figures) (flights with at least 80km altitude; US, Russia, the Soviet Union, and China)
Since the flight of the Vostok 1 in April, 1961, there have been a total of 312 manned spaceflights under the American, Russian, Soviet, and Chinese space programs. Furthermore, the space programs of the US, Russia, the Soviet Union, France, Argentina, and Iran have launched a total 32 monkeys (specifically rhesus, cynomolgus, and squirrel monkeys, macaques, chimpanzees) into space.
It's about one-and-one-tenth times the number of Beatles Songs.
In other words, 350 is 1.130 times the count of Beatles Songs, and the count of Beatles Songs is 0.8850 times that amount.(a.k.a. The Beatles) (1958 thru 1996)
It's about one-and-one-fourth times the number of Professional Baseball Teams in the United States.
In other words, 350 is 1.270 times the count of Professional Baseball Teams in the United States, and the count of Professional Baseball Teams in the United States is 0.7870 times that amount.(2016 figures) (includes Major, Minor, and Independent Leagues)
It's about one-and-three-tenths times the number of Words in the Gettysburg Address.
In other words, 350 is 1.290 times the count of Words in the Gettysburg Address, and the count of Words in the Gettysburg Address is 0.7750 times that amount.(Bliss text)
Lincoln's Gettysburg Address, delivered November 19, 1863, at the postwar dedication of the Soldiers' National Cemetery in Gettysburg, Pennsylvania, lasted just over two minutes and contained an estimated (the exact wording of the original speech is disputed) 272 words. Lincoln wrote five (5) drafts of the speech, which are known today by the last names of the original recipients.
It's about three-fourths the number of Olympic Gold Medals Won by the Soviet Union.
In other words, the count of Olympic Gold Medals Won by the Soviet Union is 1.350 times 350.(a.k.a. Union of Soviet Socialist Republics, a.k.a. USSR, a.k.a. Сою́з Сове́тских Социалисти́ческих Респу́блик, a.k.a. CCCP) (a.k.a. Olympic Games, a.k.a. Jeux olympiques) (Summer and Winter Games grand totals; excluding Russian Federation Medals) (1952 thru 1988 figures)