23221323 has 12 divisors (see below), whose sum is σ = 34784568. Its totient is φ = 15480720.

The previous prime is 23221309. The next prime is 23221327. The reversal of 23221323 is 32312232.

It is a happy number.

It is not a de Polignac number, because 23221323 - 2⁴ = 23221307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23221296 and 23221305.

It is not an unprimeable number, because it can be changed into a prime (23221327) 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 11 ways as a sum of consecutive naturals, for example, 47538 + ... + 48023.

It is an arithmetic number, because the mean of its divisors is an integer number (2898714).

Almost surely, 2^23221323 is an apocalyptic number.

23221323 is a deficient number, since it is larger than the sum of its proper divisors (11563245).

23221323 is an frugal number, since it uses more digits than its factorization.

23221323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95576 (or 95564 counting only the distinct ones).

The product of its digits is 432, while the sum is 18.

The square root of 23221323 is about 4818.8507966112. The cubic root of 23221323 is about 285.2959805980.

Adding to 23221323 its reverse (32312232), we get a palindrome (55533555).

Subtracting 23221323 from its reverse (32312232), we obtain a palindrome (9090909).

The spelling of 23221323 in words is "twenty-three million, two hundred twenty-one thousand, three hundred twenty-three".