23323220321 has 4 divisors (see below), whose sum is σ = 23718529200. Its totient is φ = 22927911444.

The previous prime is 23323220299. The next prime is 23323220369. The reversal of 23323220321 is 12302232332.

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 23323220321 - 2²⁶ = 23256111457 is a prime.

It is a super-2 number, since 2×23323220321² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23323220521) 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, 197654351 + ... + 197654468.

It is an arithmetic number, because the mean of its divisors is an integer number (5929632300).

Almost surely, 2^23323220321 is an apocalyptic number.

It is an amenable number.

23323220321 is a deficient number, since it is larger than the sum of its proper divisors (395308879).

23323220321 is an equidigital number, since it uses as much as digits as its factorization.

23323220321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395308878.

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

Adding to 23323220321 its reverse (12302232332), we get a palindrome (35625452653).

The spelling of 23323220321 in words is "twenty-three billion, three hundred twenty-three million, two hundred twenty thousand, three hundred twenty-one".