83868831 has 16 divisors (see below), whose sum is σ = 130790400. Its totient is φ = 52969464.

The previous prime is 83868823. The next prime is 83868887. The reversal of 83868831 is 13886838.

It is not a de Polignac number, because 83868831 - 2³ = 83868823 is a prime.

It is a super-2 number, since 2×83868831² = 14067961626613122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83868131) 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, 81231 + ... + 82256.

It is an arithmetic number, because the mean of its divisors is an integer number (8174400).

Almost surely, 2^83868831 is an apocalyptic number.

83868831 is a deficient number, since it is larger than the sum of its proper divisors (46921569).

83868831 is a wasteful number, since it uses less digits than its factorization.

83868831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163515 (or 163509 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 83868831 is about 9157.9927385863. The cubic root of 83868831 is about 437.7238360453.

The spelling of 83868831 in words is "eighty-three million, eight hundred sixty-eight thousand, eight hundred thirty-one".