23117447 has 2 divisors, whose sum is σ = 23117448. Its totient is φ = 23117446.

The previous prime is 23117441. The next prime is 23117449. The reversal of 23117447 is 74471132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23117447 - 2⁴ = 23117431 is a prime.

Together with 23117449, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23117441) 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, 11558723 + 11558724.

It is an arithmetic number, because the mean of its divisors is an integer number (11558724).

Almost surely, 2^23117447 is an apocalyptic number.

23117447 is a deficient number, since it is larger than the sum of its proper divisors (1).

23117447 is an equidigital number, since it uses as much as digits as its factorization.

23117447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4704, while the sum is 29.

The square root of 23117447 is about 4808.0606277375. The cubic root of 23117447 is about 284.8699396297.

Adding to 23117447 its reverse (74471132), we get a palindrome (97588579).

The spelling of 23117447 in words is "twenty-three million, one hundred seventeen thousand, four hundred forty-seven".