23231233321 has 4 divisors (see below), whose sum is σ = 23669558532. Its totient is φ = 22792908112.

The previous prime is 23231233309. The next prime is 23231233369. The reversal of 23231233321 is 12333213232.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13343715225 + 9887518096 = 115515^2 + 99436^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23231233321 is a prime.

It is a super-2 number, since 2×23231233321² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23231233381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219162526 + ... + 219162631.

It is an arithmetic number, because the mean of its divisors is an integer number (5917389633).

Almost surely, 2^23231233321 is an apocalyptic number.

It is an amenable number.

23231233321 is a deficient number, since it is larger than the sum of its proper divisors (438325211).

23231233321 is an equidigital number, since it uses as much as digits as its factorization.

23231233321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438325210.

The product of its digits is 3888, while the sum is 25.

Adding to 23231233321 its reverse (12333213232), we get a palindrome (35564446553).

The spelling of 23231233321 in words is "twenty-three billion, two hundred thirty-one million, two hundred thirty-three thousand, three hundred twenty-one".