315161513 has 8 divisors (see below), whose sum is σ = 321820968. Its totient is φ = 308565504.

The previous prime is 315161489. The next prime is 315161533.

315161513 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 3003289 + 312158224 = 1733^2 + 17668^2 .

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 315161513 - 2¹² = 315157417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315161533) 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, 5756 + ... + 25757.

It is an arithmetic number, because the mean of its divisors is an integer number (40227621).

Almost surely, 2^315161513 is an apocalyptic number.

It is an amenable number.

315161513 is a deficient number, since it is larger than the sum of its proper divisors (6659455).

315161513 is a wasteful number, since it uses less digits than its factorization.

315161513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31723.

The product of its digits is 1350, while the sum is 26.

The square root of 315161513 is about 17752.7888794972. The cubic root of 315161513 is about 680.5254826597.

The spelling of 315161513 in words is "three hundred fifteen million, one hundred sixty-one thousand, five hundred thirteen".