23420171 has 2 divisors, whose sum is σ = 23420172. Its totient is φ = 23420170.

The previous prime is 23420167. The next prime is 23420191. The reversal of 23420171 is 17102432.

It is an a-pointer prime, because the next prime (23420191) can be obtained adding 23420171 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23420171 - 2² = 23420167 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23420191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710085 + 11710086.

It is an arithmetic number, because the mean of its divisors is an integer number (11710086).

Almost surely, 2^23420171 is an apocalyptic number.

23420171 is a deficient number, since it is larger than the sum of its proper divisors (1).

23420171 is an equidigital number, since it uses as much as digits as its factorization.

23420171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 23420171 is about 4839.4391203940. The cubic root of 23420171 is about 286.1080125707.

The spelling of 23420171 in words is "twenty-three million, four hundred twenty thousand, one hundred seventy-one".