General fact: 47318 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 47318 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Trivia: 47318 is an unremarkable number.
Historical date: July 20th is the day in 1960 that the Polaris missile is successfully launched from a submarine, the USS George Washington, for the first time.