315323431 has 4 divisors (see below), whose sum is σ = 315364032. Its totient is φ = 315282832.

The previous prime is 315323401. The next prime is 315323441. The reversal of 315323431 is 134323513.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 315323431 - 2⁷ = 315323303 is a prime.

It is a super-2 number, since 2×315323431² = 198857732275223522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315323396 and 315323405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315323401) 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, 4606 + ... + 25531.

It is an arithmetic number, because the mean of its divisors is an integer number (78841008).

Almost surely, 2^315323431 is an apocalyptic number.

315323431 is a deficient number, since it is larger than the sum of its proper divisors (40601).

315323431 is a wasteful number, since it uses less digits than its factorization.

315323431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40600.

The product of its digits is 3240, while the sum is 25.

The square root of 315323431 is about 17757.3486478134. The cubic root of 315323431 is about 680.6420054114.

Adding to 315323431 its reverse (134323513), we get a palindrome (449646944).

The spelling of 315323431 in words is "three hundred fifteen million, three hundred twenty-three thousand, four hundred thirty-one".