13000211309 has 4 divisors (see below), whose sum is σ = 13134234204. Its totient is φ = 12866188416.

The previous prime is 13000211291. The next prime is 13000211311. The reversal of 13000211309 is 90311200031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2606408809 + 10393802500 = 51053^2 + 101950^2 .

It is a cyclic number.

It is not a de Polignac number, because 13000211309 - 2¹⁶ = 13000145773 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13000211209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67011302 + ... + 67011495.

It is an arithmetic number, because the mean of its divisors is an integer number (3283558551).

Almost surely, 2^13000211309 is an apocalyptic number.

It is an amenable number.

13000211309 is a deficient number, since it is larger than the sum of its proper divisors (134022895).

13000211309 is an equidigital number, since it uses as much as digits as its factorization.

13000211309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134022894.

The product of its (nonzero) digits is 162, while the sum is 20.

The spelling of 13000211309 in words is "thirteen billion, two hundred eleven thousand, three hundred nine".