22431213432 has 48 divisors (see below), whose sum is σ = 60895587480. Its totient is φ = 7459300800.

The previous prime is 22431213421. The next prime is 22431213437. The reversal of 22431213432 is 23431213422.

22431213432 is a `hidden beast` number, since 2 + 2 + 4 + 312 + 1 + 343 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 22431213396 and 22431213405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22431213437) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339694 + ... + 400317.

Almost surely, 2^22431213432 is an apocalyptic number.

It is an amenable number.

22431213432 is an abundant number, since it is smaller than the sum of its proper divisors (38464374048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22431213432 is a wasteful number, since it uses less digits than its factorization.

22431213432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740444 (or 740437 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 22431213432 its reverse (23431213422), we get a palindrome (45862426854).

The spelling of 22431213432 in words is "twenty-two billion, four hundred thirty-one million, two hundred thirteen thousand, four hundred thirty-two".