13581319 has 2 divisors, whose sum is σ = 13581320. Its totient is φ = 13581318.

The previous prime is 13581313. The next prime is 13581349. The reversal of 13581319 is 91318531.

It is a weak prime.

It is an emirp because it is prime and its reverse (91318531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13581319 - 2⁵ = 13581287 is a prime.

It is a super-2 number, since 2×13581319² = 368904451559522, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13581313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6790659 + 6790660.

It is an arithmetic number, because the mean of its divisors is an integer number (6790660).

Almost surely, 2^13581319 is an apocalyptic number.

13581319 is a deficient number, since it is larger than the sum of its proper divisors (1).

13581319 is an equidigital number, since it uses as much as digits as its factorization.

13581319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 31.

The square root of 13581319 is about 3685.2841138778. The cubic root of 13581319 is about 238.5872968380.

The spelling of 13581319 in words is "thirteen million, five hundred eighty-one thousand, three hundred nineteen".