315383513 has 4 divisors (see below), whose sum is σ = 315798708. Its totient is φ = 314968320.

The previous prime is 315383479. The next prime is 315383531.

315383513 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31393609 + 283989904 = 5603^2 + 16852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315383513 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 315383513.

It is not an unprimeable number, because it can be changed into a prime (315383573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206456 + ... + 207977.

It is an arithmetic number, because the mean of its divisors is an integer number (78949677).

Almost surely, 2^315383513 is an apocalyptic number.

It is an amenable number.

315383513 is a deficient number, since it is larger than the sum of its proper divisors (415195).

315383513 is an equidigital number, since it uses as much as digits as its factorization.

315383513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415194.

The product of its digits is 16200, while the sum is 32.

The square root of 315383513 is about 17759.0403175397. The cubic root of 315383513 is about 680.6852327053.

The spelling of 315383513 in words is "three hundred fifteen million, three hundred eighty-three thousand, five hundred thirteen".