22431374021 has 8 divisors (see below), whose sum is σ = 25641774720. Its totient is φ = 19222453008.

The previous prime is 22431373999. The next prime is 22431374029. The reversal of 22431374021 is 12047313422.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22431374021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22431374029) 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, 337241 + ... + 398238.

It is an arithmetic number, because the mean of its divisors is an integer number (3205221840).

Almost surely, 2^22431374021 is an apocalyptic number.

It is an amenable number.

22431374021 is a deficient number, since it is larger than the sum of its proper divisors (3210400699).

22431374021 is an equidigital number, since it uses as much as digits as its factorization.

22431374021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739843.

The product of its (nonzero) digits is 8064, while the sum is 29.

Adding to 22431374021 its reverse (12047313422), we get a palindrome (34478687443).

The spelling of 22431374021 in words is "twenty-two billion, four hundred thirty-one million, three hundred seventy-four thousand, twenty-one".