315291317 has 8 divisors (see below), whose sum is σ = 344321472. Its totient is φ = 286322400.

The previous prime is 315291287. The next prime is 315291331. The reversal of 315291317 is 713192513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 315291317 - 2⁶ = 315291253 is a prime.

It is a super-2 number, since 2×315291317² = 198817229151188978, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315291217) 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 in 7 ways as a sum of consecutive naturals, for example, 4184 + ... + 25457.

It is an arithmetic number, because the mean of its divisors is an integer number (43040184).

Almost surely, 2^315291317 is an apocalyptic number.

It is an amenable number.

315291317 is a deficient number, since it is larger than the sum of its proper divisors (29030155).

315291317 is a wasteful number, since it uses less digits than its factorization.

315291317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30619.

The product of its digits is 5670, while the sum is 32.

The square root of 315291317 is about 17756.4443794359. Note that the first 3 decimals coincide. The cubic root of 315291317 is about 680.6188980478.

The spelling of 315291317 in words is "three hundred fifteen million, two hundred ninety-one thousand, three hundred seventeen".