315431131 has 8 divisors (see below), whose sum is σ = 329414400. Its totient is φ = 301470312.

The previous prime is 315431117. The next prime is 315431159. The reversal of 315431131 is 131134513.

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 315431131 - 2⁷ = 315431003 is a prime.

It is a super-2 number, since 2×315431131² = 198993596807878322, which contains 22 as substring.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27276 + ... + 37078.

It is an arithmetic number, because the mean of its divisors is an integer number (41176800).

Almost surely, 2^315431131 is an apocalyptic number.

315431131 is a deficient number, since it is larger than the sum of its proper divisors (13983269).

315431131 is a wasteful number, since it uses less digits than its factorization.

315431131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11225.

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

The square root of 315431131 is about 17760.3809362299. The cubic root of 315431131 is about 680.7194886053.

Adding to 315431131 its reverse (131134513), we get a palindrome (446565644).

The spelling of 315431131 in words is "three hundred fifteen million, four hundred thirty-one thousand, one hundred thirty-one".