315952913 has 2 divisors, whose sum is σ = 315952914. Its totient is φ = 315952912.

The previous prime is 315952849. The next prime is 315952921. The reversal of 315952913 is 319259513.

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., 175483009 + 140469904 = 13247^2 + 11852^2 .

It is an emirp because it is prime and its reverse (319259513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315952913 - 2⁶ = 315952849 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (315952943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157976456 + 157976457.

It is an arithmetic number, because the mean of its divisors is an integer number (157976457).

Almost surely, 2^315952913 is an apocalyptic number.

It is an amenable number.

315952913 is a deficient number, since it is larger than the sum of its proper divisors (1).

315952913 is an equidigital number, since it uses as much as digits as its factorization.

315952913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36450, while the sum is 38.

The square root of 315952913 is about 17775.0643599397. The cubic root of 315952913 is about 681.0946275527.

The spelling of 315952913 in words is "three hundred fifteen million, nine hundred fifty-two thousand, nine hundred thirteen".