23311013513309 has 2 divisors, whose sum is σ = 23311013513310. Its totient is φ = 23311013513308.

The previous prime is 23311013513297. The next prime is 23311013513317. The reversal of 23311013513309 is 90331531011332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22361454864100 + 949558649209 = 4728790^2 + 974453^2 .

It is a cyclic number.

It is not a de Polignac number, because 23311013513309 - 2¹⁶ = 23311013447773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23311013513399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11655506756654 + 11655506756655.

It is an arithmetic number, because the mean of its divisors is an integer number (11655506756655).

Almost surely, 2^{23311013513309} is an apocalyptic number.

It is an amenable number.

23311013513309 is a deficient number, since it is larger than the sum of its proper divisors (1).

23311013513309 is an equidigital number, since it uses as much as digits as its factorization.

23311013513309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 35.

The spelling of 23311013513309 in words is "twenty-three trillion, three hundred eleven billion, thirteen million, five hundred thirteen thousand, three hundred nine".