22431381853 has 4 divisors (see below), whose sum is σ = 23154974848. Its totient is φ = 21707788860.

The previous prime is 22431381829. The next prime is 22431381859. The reversal of 22431381853 is 35818313422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22431381853 - 2⁹ = 22431381341 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 (22431381859) 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, 361796451 + ... + 361796512.

It is an arithmetic number, because the mean of its divisors is an integer number (5788743712).

Almost surely, 2^22431381853 is an apocalyptic number.

It is an amenable number.

22431381853 is a deficient number, since it is larger than the sum of its proper divisors (723592995).

22431381853 is an equidigital number, since it uses as much as digits as its factorization.

22431381853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723592994.

The product of its digits is 138240, while the sum is 40.

The spelling of 22431381853 in words is "twenty-two billion, four hundred thirty-one million, three hundred eighty-one thousand, eight hundred fifty-three".