231323331121 has 4 divisors (see below), whose sum is σ = 231683088112. Its totient is φ = 230963574132.

The previous prime is 231323331119. The next prime is 231323331133. The reversal of 231323331121 is 121133323132.

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 231323331121 - 2¹ = 231323331119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231323331101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179877531 + ... + 179878816.

It is an arithmetic number, because the mean of its divisors is an integer number (57920772028).

Almost surely, 2^231323331121 is an apocalyptic number.

It is an amenable number.

231323331121 is a deficient number, since it is larger than the sum of its proper divisors (359756991).

231323331121 is an equidigital number, since it uses as much as digits as its factorization.

231323331121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359756990.

The product of its digits is 1944, while the sum is 25.

Adding to 231323331121 its reverse (121133323132), we get a palindrome (352456654253).

The spelling of 231323331121 in words is "two hundred thirty-one billion, three hundred twenty-three million, three hundred thirty-one thousand, one hundred twenty-one".