22431379 has 2 divisors, whose sum is σ = 22431380. Its totient is φ = 22431378.

The previous prime is 22431377. The next prime is 22431391. The reversal of 22431379 is 97313422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22431379 - 2¹ = 22431377 is a prime.

Together with 22431377, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 22431379.

It is not a weakly prime, because it can be changed into another prime (22431377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11215689 + 11215690.

It is an arithmetic number, because the mean of its divisors is an integer number (11215690).

Almost surely, 2^22431379 is an apocalyptic number.

22431379 is a deficient number, since it is larger than the sum of its proper divisors (1).

22431379 is an equidigital number, since it uses as much as digits as its factorization.

22431379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 22431379 is about 4736.1776782549. The cubic root of 22431379 is about 282.0235171441.

The spelling of 22431379 in words is "twenty-two million, four hundred thirty-one thousand, three hundred seventy-nine".