22131031120423 has 4 divisors (see below), whose sum is σ = 22131048900528. Its totient is φ = 22131013340320.

The previous prime is 22131031120351. The next prime is 22131031120427. The reversal of 22131031120423 is 32402113013122.

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 22131031120423 - 2¹⁷ = 22131030989351 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 (22131031120427) 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, 6869986 + ... + 9563407.

It is an arithmetic number, because the mean of its divisors is an integer number (5532762225132).

Almost surely, 2^{22131031120423} is an apocalyptic number.

22131031120423 is a deficient number, since it is larger than the sum of its proper divisors (17780105).

22131031120423 is a wasteful number, since it uses less digits than its factorization.

22131031120423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17780104.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 22131031120423 its reverse (32402113013122), we get a palindrome (54533144133545).

The spelling of 22131031120423 in words is "twenty-two trillion, one hundred thirty-one billion, thirty-one million, one hundred twenty thousand, four hundred twenty-three".