86173131 has 16 divisors (see below), whose sum is σ = 125503488. Its totient is φ = 52159200.

The previous prime is 86173127. The next prime is 86173147. The reversal of 86173131 is 13137168.

It is not a de Polignac number, because 86173131 - 2² = 86173127 is a prime.

It is a super-2 number, since 2×86173131² = 14851617012686322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86173331) 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, 39766 + ... + 41876.

It is an arithmetic number, because the mean of its divisors is an integer number (7843968).

Almost surely, 2^86173131 is an apocalyptic number.

86173131 is a deficient number, since it is larger than the sum of its proper divisors (39330357).

86173131 is a wasteful number, since it uses less digits than its factorization.

86173131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3362.

The product of its digits is 3024, while the sum is 30.

The square root of 86173131 is about 9282.9484001582. The cubic root of 86173131 is about 441.6964996739.

The spelling of 86173131 in words is "eighty-six million, one hundred seventy-three thousand, one hundred thirty-one".