13131330449 has 2 divisors, whose sum is σ = 13131330450. Its totient is φ = 13131330448.

The previous prime is 13131330437. The next prime is 13131330479. The reversal of 13131330449 is 94403313131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9630478225 + 3500852224 = 98135^2 + 59168^2 .

It is a cyclic number.

It is not a de Polignac number, because 13131330449 - 2²⁴ = 13114553233 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (13131330479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6565665224 + 6565665225.

It is an arithmetic number, because the mean of its divisors is an integer number (6565665225).

Almost surely, 2^13131330449 is an apocalyptic number.

It is an amenable number.

13131330449 is a deficient number, since it is larger than the sum of its proper divisors (1).

13131330449 is an equidigital number, since it uses as much as digits as its factorization.

13131330449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The spelling of 13131330449 in words is "thirteen billion, one hundred thirty-one million, three hundred thirty thousand, four hundred forty-nine".