816230776931 has 2 divisors, whose sum is σ = 816230776932. Its totient is φ = 816230776930.

The previous prime is 816230776883. The next prime is 816230776943. The reversal of 816230776931 is 139677032618.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 816230776931 - 2³⁰ = 815157035107 is a prime.

It is a super-2 number, since 2×816230776931² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (816230770931) 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, 408115388465 + 408115388466.

It is an arithmetic number, because the mean of its divisors is an integer number (408115388466).

Almost surely, 2^816230776931 is an apocalyptic number.

816230776931 is a deficient number, since it is larger than the sum of its proper divisors (1).

816230776931 is an equidigital number, since it uses as much as digits as its factorization.

816230776931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 816230776931 in words is "eight hundred sixteen billion, two hundred thirty million, seven hundred seventy-six thousand, nine hundred thirty-one".