Adding to 312431 its sum of digits (14), we get a triangular number (312445 = T790).
Adding to 312431 its reverse (134213), we get a palindrome (446644).
It is a semiprime because it is the product of two primes.
It is a Duffinian number.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 312431.
2312431 is an apocalyptic number.
312431 is an equidigital number, since it uses as much as digits as its factorization.
312431 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 44640.
The square root of 312431 is about 558.9552754917. The cubic root of 312431 is about 67.8554455188.
The spelling of 312431 in words is "three hundred twelve thousand, four hundred thirty-one".