86250031 has 16 divisors (see below), whose sum is σ = 103219200. Its totient is φ = 70505568.

The previous prime is 86250001. The next prime is 86250041. The reversal of 86250031 is 13005268.

It is a happy number.

It is not a de Polignac number, because 86250031 - 2⁹ = 86249519 is a prime.

It is a super-2 number, since 2×86250031² = 14878135695001922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86249978 and 86250005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86250001) 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 15 ways as a sum of consecutive naturals, for example, 14290 + ... + 19408.

It is an arithmetic number, because the mean of its divisors is an integer number (6451200).

Almost surely, 2^86250031 is an apocalyptic number.

86250031 is a deficient number, since it is larger than the sum of its proper divisors (16969169).

86250031 is a wasteful number, since it uses less digits than its factorization.

86250031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5238.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 86250031 is about 9287.0894794871. The cubic root of 86250031 is about 441.8278490541.

Adding to 86250031 its reverse (13005268), we get a palindrome (99255299).

The spelling of 86250031 in words is "eighty-six million, two hundred fifty thousand, thirty-one".