22719143 has 2 divisors, whose sum is σ = 22719144. Its totient is φ = 22719142.

The previous prime is 22719113. The next prime is 22719149. The reversal of 22719143 is 34191722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22719143 - 2⁸ = 22718887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22719149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11359571 + 11359572.

It is an arithmetic number, because the mean of its divisors is an integer number (11359572).

Almost surely, 2^22719143 is an apocalyptic number.

22719143 is a deficient number, since it is larger than the sum of its proper divisors (1).

22719143 is an equidigital number, since it uses as much as digits as its factorization.

22719143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 22719143 is about 4766.4602169744. The cubic root of 22719143 is about 283.2243888726.

The spelling of 22719143 in words is "twenty-two million, seven hundred nineteen thousand, one hundred forty-three".