Fatto generale: 4327 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 4327 is an uninteresting number.
Trivia: 4327 is an uninteresting number.
Data storica: November 5th is the day in 1937 that Adolf Hitler holds a secret meeting and states his plans for acquiring "living space" for the German people.