315387613 has 4 divisors (see below), whose sum is σ = 317130268. Its totient is φ = 313644960.

The previous prime is 315387607. The next prime is 315387637. The reversal of 315387613 is 316783513.

It is a happy number.

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 54952569 + 260435044 = 7413^2 + 16138^2 .

It is a cyclic number.

It is not a de Polignac number, because 315387613 - 2⁵ = 315387581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315387113) 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 3 ways as a sum of consecutive naturals, for example, 871056 + ... + 871417.

It is an arithmetic number, because the mean of its divisors is an integer number (79282567).

Almost surely, 2^315387613 is an apocalyptic number.

It is an amenable number.

315387613 is a deficient number, since it is larger than the sum of its proper divisors (1742655).

315387613 is a wasteful number, since it uses less digits than its factorization.

315387613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1742654.

The product of its digits is 45360, while the sum is 37.

The square root of 315387613 is about 17759.1557513301. The cubic root of 315387613 is about 680.6881823388.

The spelling of 315387613 in words is "three hundred fifteen million, three hundred eighty-seven thousand, six hundred thirteen".