Fatto generale: 8431 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 8431 is a boring number.
Trivia: 8431 is a boring number.
Data storica: January 30th is the day in 1971 that Carole King's Tapestry album is released, it would become the longest charting album by a female solo artist and sell 24 million copies worldwide.