86693131 has 4 divisors (see below), whose sum is σ = 99077872. Its totient is φ = 74308392.

The previous prime is 86693129. The next prime is 86693153. The reversal of 86693131 is 13139668.

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 86693131 - 2¹ = 86693129 is a prime.

It is a super-2 number, since 2×86693131² = 15031397925166322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86693111) 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 3 ways as a sum of consecutive naturals, for example, 6192360 + ... + 6192373.

It is an arithmetic number, because the mean of its divisors is an integer number (24769468).

Almost surely, 2^86693131 is an apocalyptic number.

86693131 is a deficient number, since it is larger than the sum of its proper divisors (12384741).

86693131 is a wasteful number, since it uses less digits than its factorization.

86693131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12384740.

The product of its digits is 23328, while the sum is 37.

The square root of 86693131 is about 9310.9146167280. The cubic root of 86693131 is about 442.5831709774.

The spelling of 86693131 in words is "eighty-six million, six hundred ninety-three thousand, one hundred thirty-one".