31860786671 has 16 divisors (see below), whose sum is σ = 38354745600. Its totient is φ = 25854380928.

The previous prime is 31860786653. The next prime is 31860786697. The reversal of 31860786671 is 17668706813.

It is a cyclic number.

It is not a de Polignac number, because 31860786671 - 2²⁶ = 31793677807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31860786611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117596 + ... + 278478.

It is an arithmetic number, because the mean of its divisors is an integer number (2397171600).

Almost surely, 2^31860786671 is an apocalyptic number.

31860786671 is a deficient number, since it is larger than the sum of its proper divisors (6493958929).

31860786671 is a wasteful number, since it uses less digits than its factorization.

31860786671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162398.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The spelling of 31860786671 in words is "thirty-one billion, eight hundred sixty million, seven hundred eighty-six thousand, six hundred seventy-one".