23130817 has 2 divisors, whose sum is σ = 23130818. Its totient is φ = 23130816.

The previous prime is 23130803. The next prime is 23130823. The reversal of 23130817 is 71803132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22363441 + 767376 = 4729^2 + 876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23130817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23130791 and 23130800.

It is not a weakly prime, because it can be changed into another prime (23130827) 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, 11565408 + 11565409.

It is an arithmetic number, because the mean of its divisors is an integer number (11565409).

Almost surely, 2^23130817 is an apocalyptic number.

It is an amenable number.

23130817 is a deficient number, since it is larger than the sum of its proper divisors (1).

23130817 is an equidigital number, since it uses as much as digits as its factorization.

23130817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 23130817 is about 4809.4508002474. The cubic root of 23130817 is about 284.9248473231.

Adding to 23130817 its reverse (71803132), we get a palindrome (94933949).

The spelling of 23130817 in words is "twenty-three million, one hundred thirty thousand, eight hundred seventeen".