31911749796 has 12 divisors (see below), whose sum is σ = 74460749552. Its totient is φ = 10637249928.

The previous prime is 31911749783. The next prime is 31911749803. The reversal of 31911749796 is 69794711913.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-4 number, since 4×31911749796⁴ (a number of 43 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1329656230 + ... + 1329656253.

Almost surely, 2^31911749796 is an apocalyptic number.

It is an amenable number.

31911749796 is an abundant number, since it is smaller than the sum of its proper divisors (42548999756).

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

31911749796 is a wasteful number, since it uses less digits than its factorization.

31911749796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659312490 (or 2659312488 counting only the distinct ones).

The product of its digits is 2571912, while the sum is 57.

The spelling of 31911749796 in words is "thirty-one billion, nine hundred eleven million, seven hundred forty-nine thousand, seven hundred ninety-six".