23420017 has 2 divisors, whose sum is σ = 23420018. Its totient is φ = 23420016.

The previous prime is 23419997. The next prime is 23420021. The reversal of 23420017 is 71002432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23415921 + 4096 = 4839^2 + 64^2 .

It is a cyclic number.

It is not a de Polignac number, because 23420017 - 2⁷ = 23419889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23419976 and 23420003.

It is not a weakly prime, because it can be changed into another prime (23420077) 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, 11710008 + 11710009.

It is an arithmetic number, because the mean of its divisors is an integer number (11710009).

Almost surely, 2^23420017 is an apocalyptic number.

It is an amenable number.

23420017 is a deficient number, since it is larger than the sum of its proper divisors (1).

23420017 is an equidigital number, since it uses as much as digits as its factorization.

23420017 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 19.

The square root of 23420017 is about 4839.4232094331. The cubic root of 23420017 is about 286.1073854655.

Adding to 23420017 its reverse (71002432), we get a palindrome (94422449).

The spelling of 23420017 in words is "twenty-three million, four hundred twenty thousand, seventeen".