22343644231 has 2 divisors, whose sum is σ = 22343644232. Its totient is φ = 22343644230.

The previous prime is 22343644223. The next prime is 22343644247. The reversal of 22343644231 is 13244634322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22343644231 - 2³ = 22343644223 is a prime.

It is a super-2 number, since 2×22343644231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22343644201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11171822115 + 11171822116.

It is an arithmetic number, because the mean of its divisors is an integer number (11171822116).

Almost surely, 2^22343644231 is an apocalyptic number.

22343644231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22343644231 is an equidigital number, since it uses as much as digits as its factorization.

22343644231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 34.

Subtracting from 22343644231 its reverse (13244634322), we obtain a palindrome (9099009909).

The spelling of 22343644231 in words is "twenty-two billion, three hundred forty-three million, six hundred forty-four thousand, two hundred thirty-one".