86539131 has 32 divisors (see below), whose sum is σ = 148608000. Its totient is φ = 48746880.

The previous prime is 86539121. The next prime is 86539169. The reversal of 86539131 is 13193568.

It is a happy number.

It is not a de Polignac number, because 86539131 - 2⁵ = 86539099 is a prime.

It is a super-2 number, since 2×86539131² = 14978042388470322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86539111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10195 + ... + 16643.

It is an arithmetic number, because the mean of its divisors is an integer number (4644000).

Almost surely, 2^86539131 is an apocalyptic number.

86539131 is a deficient number, since it is larger than the sum of its proper divisors (62068869).

86539131 is a wasteful number, since it uses less digits than its factorization.

86539131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6536 (or 6530 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 86539131 is about 9302.6410765975. The cubic root of 86539131 is about 442.3209502551.

The spelling of 86539131 in words is "eighty-six million, five hundred thirty-nine thousand, one hundred thirty-one".