22404040231 has 2 divisors, whose sum is σ = 22404040232. Its totient is φ = 22404040230.

The previous prime is 22404040187. The next prime is 22404040249. The reversal of 22404040231 is 13204040422.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22404040231 - 2³³ = 13814105639 is a prime.

It is a super-2 number, since 2×22404040231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22404040271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11202020115 + 11202020116.

It is an arithmetic number, because the mean of its divisors is an integer number (11202020116).

Almost surely, 2^22404040231 is an apocalyptic number.

22404040231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22404040231 is an equidigital number, since it uses as much as digits as its factorization.

22404040231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 22404040231 its reverse (13204040422), we get a palindrome (35608080653).

The spelling of 22404040231 in words is "twenty-two billion, four hundred four million, forty thousand, two hundred thirty-one".