23317121 has 2 divisors, whose sum is σ = 23317122. Its totient is φ = 23317120.

The previous prime is 23317057. The next prime is 23317127. The reversal of 23317121 is 12171332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22193521 + 1123600 = 4711^2 + 1060^2 .

It is a cyclic number.

It is not a de Polignac number, because 23317121 - 2⁶ = 23317057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23317093 and 23317102.

It is not a weakly prime, because it can be changed into another prime (23317127) 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, 11658560 + 11658561.

It is an arithmetic number, because the mean of its divisors is an integer number (11658561).

Almost surely, 2^23317121 is an apocalyptic number.

It is an amenable number.

23317121 is a deficient number, since it is larger than the sum of its proper divisors (1).

23317121 is an equidigital number, since it uses as much as digits as its factorization.

23317121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252, while the sum is 20.

The square root of 23317121 is about 4828.7804878665. The cubic root of 23317121 is about 285.6877654313.

Adding to 23317121 its reverse (12171332), we get a palindrome (35488453).

The spelling of 23317121 in words is "twenty-three million, three hundred seventeen thousand, one hundred twenty-one".