231334321 has 4 divisors (see below), whose sum is σ = 233496432. Its totient is φ = 229172212.

The previous prime is 231334309. The next prime is 231334331. The reversal of 231334321 is 123433132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231334321 - 2⁵ = 231334289 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231334292 and 231334301.

It is not an unprimeable number, because it can be changed into a prime (231334331) 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, 1080895 + ... + 1081108.

It is an arithmetic number, because the mean of its divisors is an integer number (58374108).

Almost surely, 2^231334321 is an apocalyptic number.

It is an amenable number.

231334321 is a deficient number, since it is larger than the sum of its proper divisors (2162111).

231334321 is a wasteful number, since it uses less digits than its factorization.

231334321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2162110.

The product of its digits is 1296, while the sum is 22.

The square root of 231334321 is about 15209.6785304621. The cubic root of 231334321 is about 613.8751076672.

Adding to 231334321 its reverse (123433132), we get a palindrome (354767453).

The spelling of 231334321 in words is "two hundred thirty-one million, three hundred thirty-four thousand, three hundred twenty-one".