31113505516 has 24 divisors (see below), whose sum is σ = 54543557376. Its totient is φ = 15529659600.

The previous prime is 31113505463. The next prime is 31113505559. The reversal of 31113505516 is 61550531113.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7762785 + ... + 7766791.

It is an arithmetic number, because the mean of its divisors is an integer number (2272648224).

Almost surely, 2^31113505516 is an apocalyptic number.

It is an amenable number.

31113505516 is a deficient number, since it is larger than the sum of its proper divisors (23430051860).

31113505516 is a wasteful number, since it uses less digits than its factorization.

31113505516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6909 (or 6907 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 31.

The spelling of 31113505516 in words is "thirty-one billion, one hundred thirteen million, five hundred five thousand, five hundred sixteen".