23201117 has 2 divisors, whose sum is σ = 23201118. Its totient is φ = 23201116.

The previous prime is 23201099. The next prime is 23201119. The reversal of 23201117 is 71110232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21335161 + 1865956 = 4619^2 + 1366^2 .

It is a cyclic number.

It is not a de Polignac number, because 23201117 - 2⁸ = 23200861 is a prime.

Together with 23201119, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23201095 and 23201104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23201119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11600558 + 11600559.

It is an arithmetic number, because the mean of its divisors is an integer number (11600559).

Almost surely, 2^23201117 is an apocalyptic number.

It is an amenable number.

23201117 is a deficient number, since it is larger than the sum of its proper divisors (1).

23201117 is an equidigital number, since it uses as much as digits as its factorization.

23201117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 23201117 is about 4816.7537823725. The cubic root of 23201117 is about 285.2132066257.

Adding to 23201117 its reverse (71110232), we get a palindrome (94311349).

The spelling of 23201117 in words is "twenty-three million, two hundred one thousand, one hundred seventeen".