86500231 has 2 divisors, whose sum is σ = 86500232. Its totient is φ = 86500230.

The previous prime is 86500207. The next prime is 86500237. The reversal of 86500231 is 13200568.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86500231 - 2¹⁷ = 86369159 is a prime.

It is a super-2 number, since 2×86500231² = 14964579926106722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86500196 and 86500205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86500237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43250115 + 43250116.

It is an arithmetic number, because the mean of its divisors is an integer number (43250116).

Almost surely, 2^86500231 is an apocalyptic number.

86500231 is a deficient number, since it is larger than the sum of its proper divisors (1).

86500231 is an equidigital number, since it uses as much as digits as its factorization.

86500231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 86500231 is about 9300.5500374978. The cubic root of 86500231 is about 442.2546647743.

Adding to 86500231 its reverse (13200568), we get a palindrome (99700799).

The spelling of 86500231 in words is "eighty-six million, five hundred thousand, two hundred thirty-one".