86500431 has 12 divisors (see below), whose sum is σ = 127063560. Its totient is φ = 56689200.

The previous prime is 86500423. The next prime is 86500433. The reversal of 86500431 is 13400568.

86500431 is a `hidden beast` number, since 8 + 650 + 0 + 4 + 3 + 1 = 666.

It is not a de Polignac number, because 86500431 - 2³ = 86500423 is a prime.

It is a super-2 number, since 2×86500431² = 14964649126371522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86500395 and 86500404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86500433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80920 + ... + 81981.

It is an arithmetic number, because the mean of its divisors is an integer number (10588630).

Almost surely, 2^86500431 is an apocalyptic number.

86500431 is a deficient number, since it is larger than the sum of its proper divisors (40563129).

86500431 is a wasteful number, since it uses less digits than its factorization.

86500431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162966 (or 162963 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 86500431 is about 9300.5607895438. The cubic root of 86500431 is about 442.2550056245.

Adding to 86500431 its reverse (13400568), we get a palindrome (99900999).

The spelling of 86500431 in words is "eighty-six million, five hundred thousand, four hundred thirty-one".