22431321971 has 2 divisors, whose sum is σ = 22431321972. Its totient is φ = 22431321970.

The previous prime is 22431321919. The next prime is 22431321977. The reversal of 22431321971 is 17912313422.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22431321971 is a prime.

It is not a weakly prime, because it can be changed into another prime (22431321977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11215660985 + 11215660986.

It is an arithmetic number, because the mean of its divisors is an integer number (11215660986).

Almost surely, 2^22431321971 is an apocalyptic number.

22431321971 is a deficient number, since it is larger than the sum of its proper divisors (1).

22431321971 is an equidigital number, since it uses as much as digits as its factorization.

22431321971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The spelling of 22431321971 in words is "twenty-two billion, four hundred thirty-one million, three hundred twenty-one thousand, nine hundred seventy-one".