23513411321 has 2 divisors, whose sum is σ = 23513411322. Its totient is φ = 23513411320.

The previous prime is 23513411293. The next prime is 23513411329. The reversal of 23513411321 is 12311431532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19237690000 + 4275721321 = 138700^2 + 65389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23513411321 is a prime.

It is not a weakly prime, because it can be changed into another prime (23513411329) 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, 11756705660 + 11756705661.

It is an arithmetic number, because the mean of its divisors is an integer number (11756705661).

Almost surely, 2^23513411321 is an apocalyptic number.

It is an amenable number.

23513411321 is a deficient number, since it is larger than the sum of its proper divisors (1).

23513411321 is an equidigital number, since it uses as much as digits as its factorization.

23513411321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

Adding to 23513411321 its reverse (12311431532), we get a palindrome (35824842853).

The spelling of 23513411321 in words is "twenty-three billion, five hundred thirteen million, four hundred eleven thousand, three hundred twenty-one".