86248931 has 2 divisors, whose sum is σ = 86248932. Its totient is φ = 86248930.

The previous prime is 86248889. The next prime is 86248933. The reversal of 86248931 is 13984268.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86248931 - 2²² = 82054627 is a prime.

It is a super-2 number, since 2×86248931² = 14877756197285522, which contains 22 as substring.

Together with 86248933, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86248933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43124465 + 43124466.

It is an arithmetic number, because the mean of its divisors is an integer number (43124466).

Almost surely, 2^86248931 is an apocalyptic number.

86248931 is a deficient number, since it is larger than the sum of its proper divisors (1).

86248931 is an equidigital number, since it uses as much as digits as its factorization.

86248931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The square root of 86248931 is about 9287.0302572997. The cubic root of 86248931 is about 441.8259707449.

The spelling of 86248931 in words is "eighty-six million, two hundred forty-eight thousand, nine hundred thirty-one".