22431043434431 has 2 divisors, whose sum is σ = 22431043434432. Its totient is φ = 22431043434430.

The previous prime is 22431043434427. The next prime is 22431043434487. The reversal of 22431043434431 is 13443434013422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22431043434431 - 2² = 22431043434427 is a prime.

It is a super-2 number, since 2×22431043434431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22431043434031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11215521717215 + 11215521717216.

It is an arithmetic number, because the mean of its divisors is an integer number (11215521717216).

Almost surely, 2^{22431043434431} is an apocalyptic number.

22431043434431 is a deficient number, since it is larger than the sum of its proper divisors (1).

22431043434431 is an equidigital number, since it uses as much as digits as its factorization.

22431043434431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 38.

Adding to 22431043434431 its reverse (13443434013422), we get a palindrome (35874477447853).

The spelling of 22431043434431 in words is "twenty-two trillion, four hundred thirty-one billion, forty-three million, four hundred thirty-four thousand, four hundred thirty-one".