86315131 has 4 divisors (see below), whose sum is σ = 98645872. Its totient is φ = 73984392.

The previous prime is 86315123. The next prime is 86315149. The reversal of 86315131 is 13151368.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86315131 - 2³ = 86315123 is a prime.

It is a super-2 number, since 2×86315131² = 14900603679094322, 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 86315131.

It is not an unprimeable number, because it can be changed into a prime (86315101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6165360 + ... + 6165373.

It is an arithmetic number, because the mean of its divisors is an integer number (24661468).

Almost surely, 2^86315131 is an apocalyptic number.

86315131 is a deficient number, since it is larger than the sum of its proper divisors (12330741).

86315131 is a wasteful number, since it uses less digits than its factorization.

86315131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12330740.

The product of its digits is 2160, while the sum is 28.

The square root of 86315131 is about 9290.5936839365. The cubic root of 86315131 is about 441.9389823839.

Adding to 86315131 its reverse (13151368), we get a palindrome (99466499).

The spelling of 86315131 in words is "eighty-six million, three hundred fifteen thousand, one hundred thirty-one".