Fatto generale: 7323 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 7323 is an unremarkable number.
Trivia: 7323 is a boring number.
Data storica: January 18th is the day in 1788 that the first elements of the First Fleet carrying 736 convicts from England to Australia arrives at Botany Bay.