22043312431 has 16 divisors (see below), whose sum is σ = 25729056000. Its totient is φ = 18877680024.

The previous prime is 22043312387. The next prime is 22043312449. The reversal of 22043312431 is 13421334022.

It is not a de Polignac number, because 22043312431 - 2⁷ = 22043312303 is a prime.

It is a super-2 number, since 2×22043312431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22043312396 and 22043312405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22043312471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371280 + ... + 426538.

It is an arithmetic number, because the mean of its divisors is an integer number (1608066000).

Almost surely, 2^22043312431 is an apocalyptic number.

22043312431 is a deficient number, since it is larger than the sum of its proper divisors (3685743569).

22043312431 is an equidigital number, since it uses as much as digits as its factorization.

22043312431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56443 (or 56429 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 22043312431 its reverse (13421334022), we get a palindrome (35464646453).

The spelling of 22043312431 in words is "twenty-two billion, forty-three million, three hundred twelve thousand, four hundred thirty-one".