22431200123 has 4 divisors (see below), whose sum is σ = 22854430368. Its totient is φ = 22007969880.

The previous prime is 22431200117. The next prime is 22431200149. The reversal of 22431200123 is 32100213422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22431200123 - 2¹⁴ = 22431183739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22431200095 and 22431200104.

It is not an unprimeable number, because it can be changed into a prime (22431200723) 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, 211615043 + ... + 211615148.

It is an arithmetic number, because the mean of its divisors is an integer number (5713607592).

Almost surely, 2^22431200123 is an apocalyptic number.

22431200123 is a deficient number, since it is larger than the sum of its proper divisors (423230245).

22431200123 is an equidigital number, since it uses as much as digits as its factorization.

22431200123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423230244.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22431200123 its reverse (32100213422), we get a palindrome (54531413545).

The spelling of 22431200123 in words is "twenty-two billion, four hundred thirty-one million, two hundred thousand, one hundred twenty-three".