315688297 has 2 divisors, whose sum is σ = 315688298. Its totient is φ = 315688296.

The previous prime is 315688277. The next prime is 315688337. The reversal of 315688297 is 792886513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 290497936 + 25190361 = 17044^2 + 5019^2 .

It is a cyclic number.

It is not a de Polignac number, because 315688297 - 2¹¹ = 315686249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 315688297.

It is not a weakly prime, because it can be changed into another prime (315688267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157844148 + 157844149.

It is an arithmetic number, because the mean of its divisors is an integer number (157844149).

Almost surely, 2^315688297 is an apocalyptic number.

It is an amenable number.

315688297 is a deficient number, since it is larger than the sum of its proper divisors (1).

315688297 is an equidigital number, since it uses as much as digits as its factorization.

315688297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 49.

The square root of 315688297 is about 17767.6193396865. The cubic root of 315688297 is about 680.9044316228.

The spelling of 315688297 in words is "three hundred fifteen million, six hundred eighty-eight thousand, two hundred ninety-seven".