22031453423 has 4 divisors (see below), whose sum is σ = 25178803920. Its totient is φ = 18884102928.

The previous prime is 22031453413. The next prime is 22031453429. The reversal of 22031453423 is 32435413022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22031453423 - 2⁴ = 22031453407 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 (22031453429) 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, 1573675238 + ... + 1573675251.

It is an arithmetic number, because the mean of its divisors is an integer number (6294700980).

Almost surely, 2^22031453423 is an apocalyptic number.

22031453423 is a deficient number, since it is larger than the sum of its proper divisors (3147350497).

22031453423 is an equidigital number, since it uses as much as digits as its factorization.

22031453423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3147350496.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 22031453423 its reverse (32435413022), we get a palindrome (54466866445).

The spelling of 22031453423 in words is "twenty-two billion, thirty-one million, four hundred fifty-three thousand, four hundred twenty-three".