23311113209 has 2 divisors, whose sum is σ = 23311113210. Its totient is φ = 23311113208.

The previous prime is 23311113191. The next prime is 23311113227. The reversal of 23311113209 is 90231111332.

It is a balanced prime because it is at equal distance from previous prime (23311113191) and next prime (23311113227).

It can be written as a sum of positive squares in only one way, i.e., 21888314809 + 1422798400 = 147947^2 + 37720^2 .

It is a cyclic number.

It is not a de Polignac number, because 23311113209 - 2²⁸ = 23042677753 is a prime.

It is not a weakly prime, because it can be changed into another prime (23311113809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11655556604 + 11655556605.

It is an arithmetic number, because the mean of its divisors is an integer number (11655556605).

Almost surely, 2^23311113209 is an apocalyptic number.

It is an amenable number.

23311113209 is a deficient number, since it is larger than the sum of its proper divisors (1).

23311113209 is an equidigital number, since it uses as much as digits as its factorization.

23311113209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 23311113209 in words is "twenty-three billion, three hundred eleven million, one hundred thirteen thousand, two hundred nine".