22431923 has 8 divisors (see below), whose sum is σ = 23463168. Its totient is φ = 21405384.

The previous prime is 22431919. The next prime is 22431931. The reversal of 22431923 is 32913422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22431923 - 2² = 22431919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22431892 and 22431901.

It is not an unprimeable number, because it can be changed into a prime (22431943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11690 + ... + 13472.

It is an arithmetic number, because the mean of its divisors is an integer number (2932896).

Almost surely, 2^22431923 is an apocalyptic number.

22431923 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

22431923 is a deficient number, since it is larger than the sum of its proper divisors (1031245).

22431923 is a wasteful number, since it uses less digits than its factorization.

22431923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353.

The product of its digits is 2592, while the sum is 26.

The square root of 22431923 is about 4736.2351081846. The cubic root of 22431923 is about 282.0257969795.

The spelling of 22431923 in words is "twenty-two million, four hundred thirty-one thousand, nine hundred twenty-three".