22431123 has 48 divisors (see below), whose sum is σ = 39443040. Its totient is φ = 12096000.

The previous prime is 22431113. The next prime is 22431127. The reversal of 22431123 is 32113422.

It is not a de Polignac number, because 22431123 - 2⁴ = 22431107 is a prime.

It is a super-2 number, since 2×22431123² = 1006310558082258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22431096 and 22431105.

It is not an unprimeable number, because it can be changed into a prime (22431127) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37023 + ... + 37623.

It is an arithmetic number, because the mean of its divisors is an integer number (821730).

Almost surely, 2^22431123 is an apocalyptic number.

22431123 is a deficient number, since it is larger than the sum of its proper divisors (17011917).

22431123 is a wasteful number, since it uses less digits than its factorization.

22431123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660 (or 657 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 22431123 is about 4736.1506521647. The cubic root of 22431123 is about 282.0224442676.

Adding to 22431123 its reverse (32113422), we get a palindrome (54544545).

The spelling of 22431123 in words is "twenty-two million, four hundred thirty-one thousand, one hundred twenty-three".