13531130209 has 2 divisors, whose sum is σ = 13531130210. Its totient is φ = 13531130208.

The previous prime is 13531130183. The next prime is 13531130233. The reversal of 13531130209 is 90203113531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12617579584 + 913550625 = 112328^2 + 30225^2 .

It is an emirp because it is prime and its reverse (90203113531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13531130209 is a prime.

It is not a weakly prime, because it can be changed into another prime (13531130009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765565104 + 6765565105.

It is an arithmetic number, because the mean of its divisors is an integer number (6765565105).

Almost surely, 2^13531130209 is an apocalyptic number.

It is an amenable number.

13531130209 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531130209 is an equidigital number, since it uses as much as digits as its factorization.

13531130209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 28.

The spelling of 13531130209 in words is "thirteen billion, five hundred thirty-one million, one hundred thirty thousand, two hundred nine".