867937631 has 16 divisors (see below), whose sum is σ = 965465088. Its totient is φ = 773625600.

The previous prime is 867937621. The next prime is 867937643. The reversal of 867937631 is 136739768.

It is a de Polignac number, because none of the positive numbers 2^k-867937631 is a prime.

It is a super-2 number, since 2×867937631² = 1506631462611784322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 867937631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867937621) 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, 161711 + ... + 166991.

It is an arithmetic number, because the mean of its divisors is an integer number (60341568).

Almost surely, 2^867937631 is an apocalyptic number.

867937631 is a deficient number, since it is larger than the sum of its proper divisors (97527457).

867937631 is a wasteful number, since it uses less digits than its factorization.

867937631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5582.

The product of its digits is 1143072, while the sum is 50.

The square root of 867937631 is about 29460.7812353984. The cubic root of 867937631 is about 953.8853367310.

The spelling of 867937631 in words is "eight hundred sixty-seven million, nine hundred thirty-seven thousand, six hundred thirty-one".