315328393 has 8 divisors (see below), whose sum is σ = 342901512. Its totient is φ = 288758016.

The previous prime is 315328361. The next prime is 315328399. The reversal of 315328393 is 393823513.

It can be written as a sum of positive squares in 4 ways, for example, as 173527929 + 141800464 = 13173^2 + 11908^2 .

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 315328393 - 2⁵ = 315328361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315328399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250030 + ... + 251287.

It is an arithmetic number, because the mean of its divisors is an integer number (42862689).

Almost surely, 2^315328393 is an apocalyptic number.

It is an amenable number.

315328393 is a deficient number, since it is larger than the sum of its proper divisors (27573119).

315328393 is a wasteful number, since it uses less digits than its factorization.

315328393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501371.

The product of its digits is 58320, while the sum is 37.

The square root of 315328393 is about 17757.4883640677. The cubic root of 315328393 is about 680.6455756376.

The spelling of 315328393 in words is "three hundred fifteen million, three hundred twenty-eight thousand, three hundred ninety-three".