22401323 has 16 divisors (see below), whose sum is σ = 27582720. Its totient is φ = 17762976.

The previous prime is 22401299. The next prime is 22401331. The reversal of 22401323 is 32310422.

It is not a de Polignac number, because 22401323 - 2⁶ = 22401259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22401023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3761 + ... + 7677.

It is an arithmetic number, because the mean of its divisors is an integer number (1723920).

Almost surely, 2^22401323 is an apocalyptic number.

22401323 is a deficient number, since it is larger than the sum of its proper divisors (5181397).

22401323 is a wasteful number, since it uses less digits than its factorization.

22401323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 22401323 is about 4733.0035918009. The cubic root of 22401323 is about 281.8974989211.

Adding to 22401323 its reverse (32310422), we get a palindrome (54711745).

Subtracting 22401323 from its reverse (32310422), we obtain a palindrome (9909099).

The spelling of 22401323 in words is "twenty-two million, four hundred one thousand, three hundred twenty-three".