22440324431 has 16 divisors (see below), whose sum is σ = 26109757440. Its totient is φ = 18887856480.

The previous prime is 22440324419. The next prime is 22440324449. The reversal of 22440324431 is 13442304422.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22440324431 is a prime.

It is a super-2 number, since 2×22440324431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22440324394 and 22440324403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22440324451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 215900 + ... + 302478.

It is an arithmetic number, because the mean of its divisors is an integer number (1631859840).

Almost surely, 2^22440324431 is an apocalyptic number.

22440324431 is a deficient number, since it is larger than the sum of its proper divisors (3669433009).

22440324431 is an equidigital number, since it uses as much as digits as its factorization.

22440324431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87254.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 22440324431 its reverse (13442304422), we get a palindrome (35882628853).

The spelling of 22440324431 in words is "twenty-two billion, four hundred forty million, three hundred twenty-four thousand, four hundred thirty-one".