General fact: 324 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 324 is the largest possible product of positive integers with sum 16.
Trivia: 324 is an unremarkable number.
Historical date: November 19th is the day in 1996 that Lt. Gen. Maurice Baril of Canada arrives in Africa to lead a multi-national policing force in Zaire.