13213144349 has 2 divisors, whose sum is σ = 13213144350. Its totient is φ = 13213144348.

The previous prime is 13213144279. The next prime is 13213144363. The reversal of 13213144349 is 94344131231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12616905625 + 596238724 = 112325^2 + 24418^2 .

It is a cyclic number.

It is not a de Polignac number, because 13213144349 - 2²⁸ = 12944708893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13213144249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6606572174 + 6606572175.

It is an arithmetic number, because the mean of its divisors is an integer number (6606572175).

Almost surely, 2^13213144349 is an apocalyptic number.

It is an amenable number.

13213144349 is a deficient number, since it is larger than the sum of its proper divisors (1).

13213144349 is an equidigital number, since it uses as much as digits as its factorization.

13213144349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The spelling of 13213144349 in words is "thirteen billion, two hundred thirteen million, one hundred forty-four thousand, three hundred forty-nine".