31840994956 has 12 divisors (see below), whose sum is σ = 55727250768. Its totient is φ = 15918923312.

The previous prime is 31840994929. The next prime is 31840994971. The reversal of 31840994956 is 65949904813.

It is a self number, because there is not a number n which added to its sum of digits gives 31840994956.

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 3 ways as a sum of consecutive naturals, for example, 347431 + ... + 429406.

It is an arithmetic number, because the mean of its divisors is an integer number (4643937564).

Almost surely, 2^31840994956 is an apocalyptic number.

It is an amenable number.

31840994956 is a deficient number, since it is larger than the sum of its proper divisors (23886255812).

31840994956 is a wasteful number, since it uses less digits than its factorization.

31840994956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787088 (or 787086 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 31840994956 in words is "thirty-one billion, eight hundred forty million, nine hundred ninety-four thousand, nine hundred fifty-six".