31057991112 has 64 divisors (see below), whose sum is σ = 79575552000. Its totient is φ = 10098414144.

The previous prime is 31057991077. The next prime is 31057991113. The reversal of 31057991112 is 21119975013.

It is not an unprimeable number, because it can be changed into a prime (31057991113) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 58689 + ... + 256047.

It is an arithmetic number, because the mean of its divisors is an integer number (1243368000).

Almost surely, 2^31057991112 is an apocalyptic number.

It is an amenable number.

31057991112 is an abundant number, since it is smaller than the sum of its proper divisors (48517560888).

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

31057991112 is a wasteful number, since it uses less digits than its factorization.

31057991112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197530 (or 197526 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 39.

The spelling of 31057991112 in words is "thirty-one billion, fifty-seven million, nine hundred ninety-one thousand, one hundred twelve".