22240043231 has 4 divisors (see below), whose sum is σ = 25417192272. Its totient is φ = 19062894192.

The previous prime is 22240043207. The next prime is 22240043279. The reversal of 22240043231 is 13234004222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22240043231 is a prime.

It is a super-2 number, since 2×22240043231² (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 = 22240043197 and 22240043206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22240045231) 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, 1588574510 + ... + 1588574523.

It is an arithmetic number, because the mean of its divisors is an integer number (6354298068).

Almost surely, 2^22240043231 is an apocalyptic number.

22240043231 is a deficient number, since it is larger than the sum of its proper divisors (3177149041).

22240043231 is an equidigital number, since it uses as much as digits as its factorization.

22240043231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3177149040.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 22240043231 its reverse (13234004222), we get a palindrome (35474047453).

The spelling of 22240043231 in words is "twenty-two billion, two hundred forty million, forty-three thousand, two hundred thirty-one".