31023432012 has 48 divisors (see below), whose sum is σ = 73207911392. Its totient is φ = 10224230400.

The previous prime is 31023431963. The next prime is 31023432067. The reversal of 31023432012 is 21023432013.

It is a self number, because there is not a number n which added to its sum of digits gives 31023432012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1189512 + ... + 1215312.

Almost surely, 2^31023432012 is an apocalyptic number.

It is an amenable number.

31023432012 is an abundant number, since it is smaller than the sum of its proper divisors (42184479380).

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

31023432012 is a wasteful number, since it uses less digits than its factorization.

31023432012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26938 (or 26936 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 31023432012 its reverse (21023432013), we get a palindrome (52046864025).

Subtracting from 31023432012 its reverse (21023432013), we obtain a palindrome (9999999999).

The spelling of 31023432012 in words is "thirty-one billion, twenty-three million, four hundred thirty-two thousand, twelve".