316375021 has 2 divisors, whose sum is σ = 316375022. Its totient is φ = 316375020.

The previous prime is 316374991. The next prime is 316375043. The reversal of 316375021 is 120573613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163481796 + 152893225 = 12786^2 + 12365^2 .

It is a cyclic number.

It is not a de Polignac number, because 316375021 - 2⁷ = 316374893 is a prime.

It is a zygodrome in base 8.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316378021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158187510 + 158187511.

It is an arithmetic number, because the mean of its divisors is an integer number (158187511).

Almost surely, 2^316375021 is an apocalyptic number.

It is an amenable number.

316375021 is a deficient number, since it is larger than the sum of its proper divisors (1).

316375021 is an equidigital number, since it uses as much as digits as its factorization.

316375021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 316375021 is about 17786.9339966167. The cubic root of 316375021 is about 681.3978030623.

The spelling of 316375021 in words is "three hundred sixteen million, three hundred seventy-five thousand, twenty-one".