315047617 has 2 divisors, whose sum is σ = 315047618. Its totient is φ = 315047616.

The previous prime is 315047591. The next prime is 315047641. The reversal of 315047617 is 716740513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261113281 + 53934336 = 16159^2 + 7344^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315047617 is a prime.

It is not a weakly prime, because it can be changed into another prime (315047657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157523808 + 157523809.

It is an arithmetic number, because the mean of its divisors is an integer number (157523809).

Almost surely, 2^315047617 is an apocalyptic number.

It is an amenable number.

315047617 is a deficient number, since it is larger than the sum of its proper divisors (1).

315047617 is an equidigital number, since it uses as much as digits as its factorization.

315047617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 315047617 is about 17749.5807556122. The cubic root of 315047617 is about 680.4434945721.

The spelling of 315047617 in words is "three hundred fifteen million, forty-seven thousand, six hundred seventeen".