86818131 has 12 divisors (see below), whose sum is σ = 127276552. Its totient is φ = 57014496.

The previous prime is 86818117. The next prime is 86818153. The reversal of 86818131 is 13181868.

It is not a de Polignac number, because 86818131 - 2⁷ = 86818003 is a prime.

It is a super-2 number, since 2×86818131² = 15074775740666322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86818231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71386 + ... + 72591.

Almost surely, 2^86818131 is an apocalyptic number.

86818131 is a deficient number, since it is larger than the sum of its proper divisors (40458421).

86818131 is a wasteful number, since it uses less digits than its factorization.

86818131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144050 (or 144047 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 86818131 is about 9317.6247509760. The cubic root of 86818131 is about 442.7957842397.

Adding to 86818131 its reverse (13181868), we get a palindrome (99999999).

The spelling of 86818131 in words is "eighty-six million, eight hundred eighteen thousand, one hundred thirty-one".