31816053992 has 16 divisors (see below), whose sum is σ = 59675279040. Its totient is φ = 15902646256.

The previous prime is 31816053991. The next prime is 31816054003. The reversal of 31816053992 is 29935061813.

It is a super-2 number, since 2×31816053992² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31816053991) by changing a digit.

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, 647408 + ... + 694815.

It is an arithmetic number, because the mean of its divisors is an integer number (3729704940).

Almost surely, 2^31816053992 is an apocalyptic number.

It is an amenable number.

31816053992 is a deficient number, since it is larger than the sum of its proper divisors (27859225048).

31816053992 is a wasteful number, since it uses less digits than its factorization.

31816053992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1345192 (or 1345188 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 31816053992 in words is "thirty-one billion, eight hundred sixteen million, fifty-three thousand, nine hundred ninety-two".