231322323 has 4 divisors (see below), whose sum is σ = 308429768. Its totient is φ = 154214880.

The previous prime is 231322319. The next prime is 231322363. The reversal of 231322323 is 323223132.

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

It is not a de Polignac number, because 231322323 - 2² = 231322319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231322323.

It is not an unprimeable number, because it can be changed into a prime (231322313) 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, 38553718 + ... + 38553723.

It is an arithmetic number, because the mean of its divisors is an integer number (77107442).

Almost surely, 2^231322323 is an apocalyptic number.

231322323 is a deficient number, since it is larger than the sum of its proper divisors (77107445).

231322323 is an equidigital number, since it uses as much as digits as its factorization.

231322323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77107444.

The product of its digits is 1296, while the sum is 21.

The square root of 231322323 is about 15209.2841054403. The cubic root of 231322323 is about 613.8644947429.

Adding to 231322323 its reverse (323223132), we get a palindrome (554545455).

The spelling of 231322323 in words is "two hundred thirty-one million, three hundred twenty-two thousand, three hundred twenty-three".