31027113657 has 6 divisors (see below), whose sum is σ = 44816941962. Its totient is φ = 20684742432.

The previous prime is 31027113653. The next prime is 31027113673. The reversal of 31027113657 is 75631172013.

31027113657 is a `hidden beast` number, since 310 + 271 + 13 + 65 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 29706590736 + 1320522921 = 172356^2 + 36339^2 .

It is not a de Polignac number, because 31027113657 - 2² = 31027113653 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31027113653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1723728528 + ... + 1723728545.

It is an arithmetic number, because the mean of its divisors is an integer number (7469490327).

Almost surely, 2^31027113657 is an apocalyptic number.

It is an amenable number.

31027113657 is a deficient number, since it is larger than the sum of its proper divisors (13789828305).

31027113657 is a wasteful number, since it uses less digits than its factorization.

31027113657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447457079 (or 3447457076 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The spelling of 31027113657 in words is "thirty-one billion, twenty-seven million, one hundred thirteen thousand, six hundred fifty-seven".