23722271 has 2 divisors, whose sum is σ = 23722272. Its totient is φ = 23722270.

The previous prime is 23722267. The next prime is 23722297. The reversal of 23722271 is 17222732.

It is an a-pointer prime, because the next prime (23722297) can be obtained adding 23722271 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23722271 - 2² = 23722267 is a prime.

It is a super-2 number, since 2×23722271² = 1125492282794882, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23722271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23722211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11861135 + 11861136.

It is an arithmetic number, because the mean of its divisors is an integer number (11861136).

Almost surely, 2^23722271 is an apocalyptic number.

23722271 is a deficient number, since it is larger than the sum of its proper divisors (1).

23722271 is an equidigital number, since it uses as much as digits as its factorization.

23722271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2352, while the sum is 26.

The square root of 23722271 is about 4870.5514061552. The cubic root of 23722271 is about 287.3329428968.

It can be divided in two parts, 2 and 3722271, that added together give a palindrome (3722273).

The spelling of 23722271 in words is "twenty-three million, seven hundred twenty-two thousand, two hundred seventy-one".