31210404312 has 32 divisors (see below), whose sum is σ = 82615777200. Its totient is φ = 9791499264.

The previous prime is 31210404307. The next prime is 31210404403. The reversal of 31210404312 is 21340401213.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38247637 + ... + 38248452.

Almost surely, 2^31210404312 is an apocalyptic number.

It is an amenable number.

31210404312 is an abundant number, since it is smaller than the sum of its proper divisors (51405372888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31210404312 is a wasteful number, since it uses less digits than its factorization.

31210404312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76496115 (or 76496111 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31210404312 its reverse (21340401213), we get a palindrome (52550805525).

The spelling of 31210404312 in words is "thirty-one billion, two hundred ten million, four hundred four thousand, three hundred twelve".