31031621327057 has 16 divisors (see below), whose sum is σ = 33677076031872. Its totient is φ = 28423500220800.

The previous prime is 31031621327029. The next prime is 31031621327143. The reversal of 31031621327057 is 75072312613013.

It is not a de Polignac number, because 31031621327057 - 2³⁸ = 30756743420113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31031621327027) 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, 6934148 + ... + 10495029.

It is an arithmetic number, because the mean of its divisors is an integer number (2104817251992).

Almost surely, 2^{31031621327057} is an apocalyptic number.

It is an amenable number.

31031621327057 is a deficient number, since it is larger than the sum of its proper divisors (2645454704815).

31031621327057 is a wasteful number, since it uses less digits than its factorization.

31031621327057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17430248.

The product of its (nonzero) digits is 158760, while the sum is 41.

The spelling of 31031621327057 in words is "thirty-one trillion, thirty-one billion, six hundred twenty-one million, three hundred twenty-seven thousand, fifty-seven".