31311103012 has 24 divisors (see below), whose sum is σ = 62626939200. Its totient is φ = 13418029920.

The previous prime is 31311103009. The next prime is 31311103063. The reversal of 31311103012 is 21030111313.

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 7 ways as a sum of consecutive naturals, for example, 425739 + ... + 493837.

It is an arithmetic number, because the mean of its divisors is an integer number (2609455800).

Almost surely, 2^31311103012 is an apocalyptic number.

It is an amenable number.

31311103012 is an abundant number, since it is smaller than the sum of its proper divisors (31315836188).

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

31311103012 is a wasteful number, since it uses less digits than its factorization.

31311103012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84531 (or 84529 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 31311103012 its reverse (21030111313), we get a palindrome (52341214325).

The spelling of 31311103012 in words is "thirty-one billion, three hundred eleven million, one hundred three thousand, twelve".