86513031 has 24 divisors (see below), whose sum is σ = 137614464. Its totient is φ = 51935760.

The previous prime is 86512991. The next prime is 86513059. The reversal of 86513031 is 13031568.

86513031 is a `hidden beast` number, since 8 + 651 + 3 + 0 + 3 + 1 = 666.

It is not a de Polignac number, because 86513031 - 2⁷ = 86512903 is a prime.

It is a super-2 number, since 2×86513031² = 14969009065613922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86512986 and 86513004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86513071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6510 + ... + 14676.

It is an arithmetic number, because the mean of its divisors is an integer number (5733936).

Almost surely, 2^86513031 is an apocalyptic number.

86513031 is a deficient number, since it is larger than the sum of its proper divisors (51101433).

86513031 is a wasteful number, since it uses less digits than its factorization.

86513031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8291 (or 8288 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 86513031 is about 9301.2381433871. The cubic root of 86513031 is about 442.2764781284.

Adding to 86513031 its reverse (13031568), we get a palindrome (99544599).

The spelling of 86513031 in words is "eighty-six million, five hundred thirteen thousand, thirty-one".