315525013 has 4 divisors (see below), whose sum is σ = 322862848. Its totient is φ = 308187180.

The previous prime is 315524987. The next prime is 315525031. The reversal of 315525013 is 310525513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 315525013 - 2⁹ = 315524501 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 (315525073) 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, 3668853 + ... + 3668938.

It is an arithmetic number, because the mean of its divisors is an integer number (80715712).

Almost surely, 2^315525013 is an apocalyptic number.

It is an amenable number.

315525013 is a deficient number, since it is larger than the sum of its proper divisors (7337835).

315525013 is an equidigital number, since it uses as much as digits as its factorization.

315525013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7337834.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 315525013 is about 17763.0237572323. The cubic root of 315525013 is about 680.7870162540.

The spelling of 315525013 in words is "three hundred fifteen million, five hundred twenty-five thousand, thirteen".