Fatto generale: 1307 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 1307 is a number n for which n^{2}+1 is 7 times another square.
Trivia: 1307 is an unremarkable number.
Data storica: July 30th is the day in 1866 that New Orleans's Democratic government orders police to raid an integrated Republican Party meeting, killing 40 people and injuring 150.