86324693831 has 2 divisors, whose sum is σ = 86324693832. Its totient is φ = 86324693830.

The previous prime is 86324693743. The next prime is 86324693881. The reversal of 86324693831 is 13839642368.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86324693831 is a prime.

It is a super-2 number, since 2×86324693831² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86324693881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43162346915 + 43162346916.

It is an arithmetic number, because the mean of its divisors is an integer number (43162346916).

Almost surely, 2^86324693831 is an apocalyptic number.

86324693831 is a deficient number, since it is larger than the sum of its proper divisors (1).

86324693831 is an equidigital number, since it uses as much as digits as its factorization.

86324693831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4478976, while the sum is 53.

The spelling of 86324693831 in words is "eighty-six billion, three hundred twenty-four million, six hundred ninety-three thousand, eight hundred thirty-one".