31310132012 has 12 divisors (see below), whose sum is σ = 54794015640. Its totient is φ = 15654698976.

The previous prime is 31310131997. The next prime is 31310132023. The reversal of 31310132012 is 21023101313.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211664 + ... + 327752.

It is an arithmetic number, because the mean of its divisors is an integer number (4566167970).

Almost surely, 2^31310132012 is an apocalyptic number.

It is an amenable number.

31310132012 is a deficient number, since it is larger than the sum of its proper divisors (23483883628).

31310132012 is a wasteful number, since it uses less digits than its factorization.

31310132012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183520 (or 183518 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31310132012 its reverse (21023101313), we get a palindrome (52333233325).

The spelling of 31310132012 in words is "thirty-one billion, three hundred ten million, one hundred thirty-two thousand, twelve".