316490758921 has 2 divisors, whose sum is σ = 316490758922. Its totient is φ = 316490758920.

The previous prime is 316490758891. The next prime is 316490758937. The reversal of 316490758921 is 129857094613.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204904696896 + 111586062025 = 452664^2 + 334045^2 .

It is a cyclic number.

It is not a de Polignac number, because 316490758921 - 2²⁹ = 315953888009 is a prime.

It is not a weakly prime, because it can be changed into another prime (316490758321) 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, 158245379460 + 158245379461.

It is an arithmetic number, because the mean of its divisors is an integer number (158245379461).

It is a 1-persistent number, because it is pandigital, but 2⋅316490758921 = 632981517842 is not.

Almost surely, 2^316490758921 is an apocalyptic number.

It is an amenable number.

316490758921 is a deficient number, since it is larger than the sum of its proper divisors (1).

316490758921 is an equidigital number, since it uses as much as digits as its factorization.

316490758921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 316490758921 in words is "three hundred sixteen billion, four hundred ninety million, seven hundred fifty-eight thousand, nine hundred twenty-one".