315431113 has 4 divisors (see below), whose sum is σ = 315609220. Its totient is φ = 315253008.

The previous prime is 315431111. The next prime is 315431117. The reversal of 315431113 is 311134513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 283316224 + 32114889 = 16832^2 + 5667^2 .

It is a cyclic number.

It is not a de Polignac number, because 315431113 - 2¹ = 315431111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315431111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86370 + ... + 89947.

It is an arithmetic number, because the mean of its divisors is an integer number (78902305).

Almost surely, 2^315431113 is an apocalyptic number.

It is an amenable number.

315431113 is a deficient number, since it is larger than the sum of its proper divisors (178107).

315431113 is a wasteful number, since it uses less digits than its factorization.

315431113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178106.

The product of its digits is 540, while the sum is 22.

The square root of 315431113 is about 17760.3804294840. The cubic root of 315431113 is about 680.7194756569.

Adding to 315431113 its reverse (311134513), we get a palindrome (626565626).

The spelling of 315431113 in words is "three hundred fifteen million, four hundred thirty-one thousand, one hundred thirteen".