Fatto generale: 71431 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 71431 is an uninteresting number.
Trivia: 71431 is an unremarkable number.
Data storica: July 27th is the day in 1900 that Kaiser Wilhelm II makes a speech comparing Germans to Huns; for years afterwards, "Hun" would be a disparaging name for Germans.