86893231 has 2 divisors, whose sum is σ = 86893232. Its totient is φ = 86893230.

The previous prime is 86893211. The next prime is 86893243. The reversal of 86893231 is 13239868.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86893231 - 2⁵ = 86893199 is a prime.

It is a super-2 number, since 2×86893231² = 15100867187238722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86893211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43446615 + 43446616.

It is an arithmetic number, because the mean of its divisors is an integer number (43446616).

Almost surely, 2^86893231 is an apocalyptic number.

86893231 is a deficient number, since it is larger than the sum of its proper divisors (1).

86893231 is an equidigital number, since it uses as much as digits as its factorization.

86893231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 86893231 is about 9321.6538768611. The cubic root of 86893231 is about 442.9234241659.

The spelling of 86893231 in words is "eighty-six million, eight hundred ninety-three thousand, two hundred thirty-one".