86318231 has 6 divisors (see below), whose sum is σ = 91694760. Its totient is φ = 81240416.

The previous prime is 86318227. The next prime is 86318237. The reversal of 86318231 is 13281368.

It is a happy number.

It is not a de Polignac number, because 86318231 - 2² = 86318227 is a prime.

It is a super-2 number, since 2×86318231² = 14901674005938722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86318237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 149051 + ... + 149628.

It is an arithmetic number, because the mean of its divisors is an integer number (15282460).

Almost surely, 2^86318231 is an apocalyptic number.

86318231 is a deficient number, since it is larger than the sum of its proper divisors (5376529).

86318231 is a wasteful number, since it uses less digits than its factorization.

86318231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298713 (or 298696 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 86318231 is about 9290.7605178478. The cubic root of 86318231 is about 441.9442730532.

Adding to 86318231 its reverse (13281368), we get a palindrome (99599599).

The spelling of 86318231 in words is "eighty-six million, three hundred eighteen thousand, two hundred thirty-one".