23515314217 has 2 divisors, whose sum is σ = 23515314218. Its totient is φ = 23515314216.

The previous prime is 23515314211. The next prime is 23515314233. The reversal of 23515314217 is 71241351532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19286543376 + 4228770841 = 138876^2 + 65029^2 .

It is a cyclic number.

It is not a de Polignac number, because 23515314217 - 2³¹ = 21367830569 is a prime.

It is not a weakly prime, because it can be changed into another prime (23515314211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11757657108 + 11757657109.

It is an arithmetic number, because the mean of its divisors is an integer number (11757657109).

Almost surely, 2^23515314217 is an apocalyptic number.

It is an amenable number.

23515314217 is a deficient number, since it is larger than the sum of its proper divisors (1).

23515314217 is an equidigital number, since it uses as much as digits as its factorization.

23515314217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25200, while the sum is 34.

Adding to 23515314217 its reverse (71241351532), we get a palindrome (94756665749).

The spelling of 23515314217 in words is "twenty-three billion, five hundred fifteen million, three hundred fourteen thousand, two hundred seventeen".