23231323221 has 8 divisors (see below), whose sum is σ = 30977677440. Its totient is φ = 15486258912.

The previous prime is 23231323217. The next prime is 23231323289. The reversal of 23231323221 is 12232313232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23231323221 - 2² = 23231323217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23231323191 and 23231323200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23231323211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279640 + ... + 353073.

It is an arithmetic number, because the mean of its divisors is an integer number (3872209680).

Almost surely, 2^23231323221 is an apocalyptic number.

It is an amenable number.

23231323221 is a deficient number, since it is larger than the sum of its proper divisors (7746354219).

23231323221 is a wasteful number, since it uses less digits than its factorization.

23231323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644955.

The product of its digits is 2592, while the sum is 24.

Adding to 23231323221 its reverse (12232313232), we get a palindrome (35463636453).

The spelling of 23231323221 in words is "twenty-three billion, two hundred thirty-one million, three hundred twenty-three thousand, two hundred twenty-one".