13231132309 has 2 divisors, whose sum is σ = 13231132310. Its totient is φ = 13231132308.

The previous prime is 13231132307. The next prime is 13231132319. The reversal of 13231132309 is 90323113231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7181715025 + 6049417284 = 84745^2 + 77778^2 .

It is a cyclic number.

It is not a de Polignac number, because 13231132309 - 2¹ = 13231132307 is a prime.

Together with 13231132307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13231132307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615566154 + 6615566155.

It is an arithmetic number, because the mean of its divisors is an integer number (6615566155).

Almost surely, 2^13231132309 is an apocalyptic number.

It is an amenable number.

13231132309 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231132309 is an equidigital number, since it uses as much as digits as its factorization.

13231132309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 28.

The spelling of 13231132309 in words is "thirteen billion, two hundred thirty-one million, one hundred thirty-two thousand, three hundred nine".