315101513 has 4 divisors (see below), whose sum is σ = 315169920. Its totient is φ = 315033108.

The previous prime is 315101503. The next prime is 315101537.

315101513 is nontrivially palindromic in base 10.

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 315101513 - 2⁴ = 315101497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (315101503) 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, 26753 + ... + 36686.

It is an arithmetic number, because the mean of its divisors is an integer number (78792480).

Almost surely, 2^315101513 is an apocalyptic number.

It is an amenable number.

315101513 is a deficient number, since it is larger than the sum of its proper divisors (68407).

315101513 is an equidigital number, since it uses as much as digits as its factorization.

315101513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68406.

The product of its (nonzero) digits is 225, while the sum is 20.

The square root of 315101513 is about 17751.0989237286. The cubic root of 315101513 is about 680.4822940948.

The spelling of 315101513 in words is "three hundred fifteen million, one hundred one thousand, five hundred thirteen".