315908797 has 2 divisors, whose sum is σ = 315908798. Its totient is φ = 315908796.

The previous prime is 315908753. The next prime is 315908809. The reversal of 315908797 is 797809513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 298218361 + 17690436 = 17269^2 + 4206^2 .

It is an emirp because it is prime and its reverse (797809513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315908797 - 2⁷ = 315908669 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 315908797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315908897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157954398 + 157954399.

It is an arithmetic number, because the mean of its divisors is an integer number (157954399).

Almost surely, 2^315908797 is an apocalyptic number.

It is an amenable number.

315908797 is a deficient number, since it is larger than the sum of its proper divisors (1).

315908797 is an equidigital number, since it uses as much as digits as its factorization.

315908797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 476280, while the sum is 49.

The square root of 315908797 is about 17773.8233647125. The cubic root of 315908797 is about 681.0629260259.

The spelling of 315908797 in words is "three hundred fifteen million, nine hundred eight thousand, seven hundred ninety-seven".