13081591 has 2 divisors, whose sum is σ = 13081592. Its totient is φ = 13081590.

The previous prime is 13081573. The next prime is 13081613. The reversal of 13081591 is 19518031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13081591 - 2⁵ = 13081559 is a prime.

It is a super-2 number, since 2×13081591² = 342256046182562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13088591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6540795 + 6540796.

It is an arithmetic number, because the mean of its divisors is an integer number (6540796).

Almost surely, 2^13081591 is an apocalyptic number.

13081591 is a deficient number, since it is larger than the sum of its proper divisors (1).

13081591 is an equidigital number, since it uses as much as digits as its factorization.

13081591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 13081591 is about 3616.8482135694. The cubic root of 13081591 is about 235.6243605205.

The spelling of 13081591 in words is "thirteen million, eighty-one thousand, five hundred ninety-one".