231342233 has 4 divisors (see below), whose sum is σ = 243518160. Its totient is φ = 219166308.

The previous prime is 231342229. The next prime is 231342253. The reversal of 231342233 is 332243132.

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 231342233 - 2² = 231342229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231342199 and 231342208.

It is not an unprimeable number, because it can be changed into a prime (231342253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6087935 + ... + 6087972.

It is an arithmetic number, because the mean of its divisors is an integer number (60879540).

Almost surely, 2^231342233 is an apocalyptic number.

It is an amenable number.

231342233 is a deficient number, since it is larger than the sum of its proper divisors (12175927).

231342233 is a wasteful number, since it uses less digits than its factorization.

231342233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12175926.

The product of its digits is 2592, while the sum is 23.

The square root of 231342233 is about 15209.9386257802. The cubic root of 231342233 is about 613.8821060875.

Adding to 231342233 its reverse (332243132), we get a palindrome (563585365).

The spelling of 231342233 in words is "two hundred thirty-one million, three hundred forty-two thousand, two hundred thirty-three".