22131110432431 has 24 divisors (see below), whose sum is σ = 29939607770912. Its totient is φ = 15918481022400.

The previous prime is 22131110432411. The next prime is 22131110432449. The reversal of 22131110432431 is 13423401113122.

It is not a de Polignac number, because 22131110432431 - 2¹⁹ = 22131109908143 is a prime.

It is a super-2 number, since 2×22131110432431² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22131110432431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131110432411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1004943600 + ... + 1004965621.

Almost surely, 2^{22131110432431} is an apocalyptic number.

22131110432431 is a deficient number, since it is larger than the sum of its proper divisors (7808497338481).

22131110432431 is a wasteful number, since it uses less digits than its factorization.

22131110432431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009909263 (or 2009909252 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 22131110432431 its reverse (13423401113122), we get a palindrome (35554511545553).

The spelling of 22131110432431 in words is "twenty-two trillion, one hundred thirty-one billion, one hundred ten million, four hundred thirty-two thousand, four hundred thirty-one".