315521113 has 4 divisors (see below), whose sum is σ = 317173248. Its totient is φ = 313868980.

The previous prime is 315521093. The next prime is 315521119. The reversal of 315521113 is 311125513.

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 315521113 - 2⁵ = 315521081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315521119) 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, 825781 + ... + 826162.

It is an arithmetic number, because the mean of its divisors is an integer number (79293312).

Almost surely, 2^315521113 is an apocalyptic number.

It is an amenable number.

315521113 is a deficient number, since it is larger than the sum of its proper divisors (1652135).

315521113 is a wasteful number, since it uses less digits than its factorization.

315521113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652134.

The product of its digits is 450, while the sum is 22.

The square root of 315521113 is about 17762.9139782863. The cubic root of 315521113 is about 680.7842113202.

Adding to 315521113 its reverse (311125513), we get a palindrome (626646626).

The spelling of 315521113 in words is "three hundred fifteen million, five hundred twenty-one thousand, one hundred thirteen".