231313315 has 16 divisors (see below), whose sum is σ = 293145120. Its totient is φ = 174735360.

The previous prime is 231313301. The next prime is 231313319. The reversal of 231313315 is 513313132.

It is a happy number.

It is not a de Polignac number, because 231313315 - 2²³ = 222924707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231313319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26275 + ... + 33955.

It is an arithmetic number, because the mean of its divisors is an integer number (18321570).

Almost surely, 2^231313315 is an apocalyptic number.

231313315 is a deficient number, since it is larger than the sum of its proper divisors (61831805).

231313315 is a wasteful number, since it uses less digits than its factorization.

231313315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8022.

The product of its digits is 810, while the sum is 22.

The square root of 231313315 is about 15208.9879676460. The cubic root of 231313315 is about 613.8565264052.

Adding to 231313315 its reverse (513313132), we get a palindrome (744626447).

The spelling of 231313315 in words is "two hundred thirty-one million, three hundred thirteen thousand, three hundred fifteen".