315120413 has 4 divisors (see below), whose sum is σ = 317420700. Its totient is φ = 312820128.

The previous prime is 315120397. The next prime is 315120427. The reversal of 315120413 is 314021513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314021513 = 13 ⋅24155501.

It can be written as a sum of positive squares in 2 ways, for example, as 162894169 + 152226244 = 12763^2 + 12338^2 .

It is a cyclic number.

It is not a de Polignac number, because 315120413 - 2⁴ = 315120397 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 (315120433) 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, 1149938 + ... + 1150211.

It is an arithmetic number, because the mean of its divisors is an integer number (79355175).

Almost surely, 2^315120413 is an apocalyptic number.

It is an amenable number.

315120413 is a deficient number, since it is larger than the sum of its proper divisors (2300287).

315120413 is a wasteful number, since it uses less digits than its factorization.

315120413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2300286.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 315120413 is about 17751.6312771531. The cubic root of 315120413 is about 680.4958990842.

Adding to 315120413 its reverse (314021513), we get a palindrome (629141926).

The spelling of 315120413 in words is "three hundred fifteen million, one hundred twenty thousand, four hundred thirteen".