316530434234681 has 2 divisors, whose sum is σ = 316530434234682. Its totient is φ = 316530434234680.

The previous prime is 316530434234593. The next prime is 316530434234717. The reversal of 316530434234681 is 186432434035613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 313202214150400 + 3328220084281 = 17697520^2 + 1824341^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-316530434234681 is a prime.

It is a super-2 number, since 2×316530434234681² (a number of 30 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (316530434234281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158265217117340 + 158265217117341.

It is an arithmetic number, because the mean of its divisors is an integer number (158265217117341).

Almost surely, 2^{316530434234681} is an apocalyptic number.

It is an amenable number.

316530434234681 is a deficient number, since it is larger than the sum of its proper divisors (1).

316530434234681 is an equidigital number, since it uses as much as digits as its factorization.

316530434234681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14929920, while the sum is 53.

The spelling of 316530434234681 in words is "three hundred sixteen trillion, five hundred thirty billion, four hundred thirty-four million, two hundred thirty-four thousand, six hundred eighty-one".