86097531 has 16 divisors (see below), whose sum is σ = 130135040. Its totient is φ = 50194080.

The previous prime is 86097463. The next prime is 86097547. The reversal of 86097531 is 13579068.

It is not a de Polignac number, because 86097531 - 2¹⁵ = 86064763 is a prime.

It is a super-2 number, since 2×86097531² = 14825569688591922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

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 86097531.

It is not an unprimeable number, because it can be changed into a prime (86097131) 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, 57355 + ... + 58836.

It is an arithmetic number, because the mean of its divisors is an integer number (8133440).

Almost surely, 2^86097531 is an apocalyptic number.

86097531 is a deficient number, since it is larger than the sum of its proper divisors (44037509).

86097531 is a wasteful number, since it uses less digits than its factorization.

86097531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116226.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 86097531 is about 9278.8755245450. The cubic root of 86097531 is about 441.5672945694.

The spelling of 86097531 in words is "eighty-six million, ninety-seven thousand, five hundred thirty-one".