Adding to 12431 its reverse (13421), we get a palindrome (25852).
Subtracting 12431 from its reverse (13421), we obtain a triangular number (990 = T44).
It is a happy number.
12431 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-12431 is a prime.
It is a Duffinian number.
It is a congruent number.
212431 is an apocalyptic number.
12431 is an equidigital number, since it uses as much as digits as its factorization.
12431 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 432.
The square root of 12431 is about 111.4943944779. The cubic root of 12431 is about 23.1651627361.
The spelling of 12431 in words is "twelve thousand, four hundred thirty-one".