31577037086 has 16 divisors (see below), whose sum is σ = 54134439936. Its totient is φ = 13532421816.

The previous prime is 31577037077. The next prime is 31577037103. The reversal of 31577037086 is 68073077513.

It is a happy number.

It is a super-2 number, since 2×31577037086² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31577037086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465635 + ... + 529121.

It is an arithmetic number, because the mean of its divisors is an integer number (3383402496).

Almost surely, 2^31577037086 is an apocalyptic number.

31577037086 is a deficient number, since it is larger than the sum of its proper divisors (22557402850).

31577037086 is a wasteful number, since it uses less digits than its factorization.

31577037086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99023.

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 31577037086 in words is "thirty-one billion, five hundred seventy-seven million, thirty-seven thousand, eighty-six".