Fatto generale: 351 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 351 is the smallest number so that it and the surrounding numbers are all products of 4 or more primes.
Trivia: 351 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Data storica: December 16th is the day in 1922 that President of Poland Gabriel Narutowicz is assassinated by Eligiusz Niewiadomski at the Zachęta Gallery in Warsaw.