31032112012 has 48 divisors (see below), whose sum is σ = 61330903200. Its totient is φ = 13609128960.

The previous prime is 31032112009. The next prime is 31032112037. The reversal of 31032112012 is 21021123013.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1891798 + ... + 1908130.

It is an arithmetic number, because the mean of its divisors is an integer number (1277727150).

Almost surely, 2^31032112012 is an apocalyptic number.

It is an amenable number.

31032112012 is a deficient number, since it is larger than the sum of its proper divisors (30298791188).

31032112012 is a wasteful number, since it uses less digits than its factorization.

31032112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17866 (or 17864 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31032112012 its reverse (21021123013), we get a palindrome (52053235025).

The spelling of 31032112012 in words is "thirty-one billion, thirty-two million, one hundred twelve thousand, twelve".