31677664867 has 16 divisors (see below), whose sum is σ = 34632658944. Its totient is φ = 28844496000.

The previous prime is 31677664853. The next prime is 31677664903. The reversal of 31677664867 is 76846677613.

It is a cyclic number.

It is not a de Polignac number, because 31677664867 - 2¹⁵ = 31677632099 is a prime.

It is a super-2 number, since 2×31677664867² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31677664267) 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, 2750992 + ... + 2762482.

It is an arithmetic number, because the mean of its divisors is an integer number (2164541184).

Almost surely, 2^31677664867 is an apocalyptic number.

31677664867 is a deficient number, since it is larger than the sum of its proper divisors (2954994077).

31677664867 is a wasteful number, since it uses less digits than its factorization.

31677664867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16770.

The product of its digits is 42674688, while the sum is 61.

The spelling of 31677664867 in words is "thirty-one billion, six hundred seventy-seven million, six hundred sixty-four thousand, eight hundred sixty-seven".