316323257 has 2 divisors, whose sum is σ = 316323258. Its totient is φ = 316323256.

The previous prime is 316323223. The next prime is 316323263. The reversal of 316323257 is 752323613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244734736 + 71588521 = 15644^2 + 8461^2 .

It is an emirp because it is prime and its reverse (752323613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316323257 - 2⁶ = 316323193 is a prime.

It is not a weakly prime, because it can be changed into another prime (316323277) 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, 158161628 + 158161629.

It is an arithmetic number, because the mean of its divisors is an integer number (158161629).

Almost surely, 2^316323257 is an apocalyptic number.

It is an amenable number.

316323257 is a deficient number, since it is larger than the sum of its proper divisors (1).

316323257 is an equidigital number, since it uses as much as digits as its factorization.

316323257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 32.

The square root of 316323257 is about 17785.4788240295. The cubic root of 316323257 is about 681.3606385187.

The spelling of 316323257 in words is "three hundred sixteen million, three hundred twenty-three thousand, two hundred fifty-seven".