22344431 has 6 divisors (see below), whose sum is σ = 23358720. Its totient is φ = 21372428.

The previous prime is 22344419. The next prime is 22344451. The reversal of 22344431 is 13444322.

It is not a de Polignac number, because 22344431 - 2⁶ = 22344367 is a prime.

It is a super-2 number, since 2×22344431² = 998547193427522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22344397 and 22344406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22344401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20591 + ... + 21648.

It is an arithmetic number, because the mean of its divisors is an integer number (3893120).

Almost surely, 2^22344431 is an apocalyptic number.

22344431 is a deficient number, since it is larger than the sum of its proper divisors (1014289).

22344431 is an equidigital number, since it uses as much as digits as its factorization.

22344431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42285 (or 42262 counting only the distinct ones).

The product of its digits is 2304, while the sum is 23.

The square root of 22344431 is about 4726.9896340060. The cubic root of 22344431 is about 281.6586542699.

Adding to 22344431 its reverse (13444322), we get a palindrome (35788753).

The spelling of 22344431 in words is "twenty-two million, three hundred forty-four thousand, four hundred thirty-one".