Fatto generale: 75431 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 75431 is an uninteresting number.
Trivia: 75431 is an unremarkable number.
Data storica: July 10th is the day in 138 that Emperor Hadrian dies after a heart failure at Baiae, he is buried at Rome in the Tomb of Hadrian beside his late wife, Vibia Sabina.