13091791 has 2 divisors, whose sum is σ = 13091792. Its totient is φ = 13091790.

The previous prime is 13091773. The next prime is 13091809. The reversal of 13091791 is 19719031.

13091791 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (13091773) and next prime (13091809).

It is a cyclic number.

It is not a de Polignac number, because 13091791 - 2⁹ = 13091279 is a prime.

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 (13091191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6545895 + 6545896.

It is an arithmetic number, because the mean of its divisors is an integer number (6545896).

Almost surely, 2^13091791 is an apocalyptic number.

13091791 is a deficient number, since it is larger than the sum of its proper divisors (1).

13091791 is an equidigital number, since it uses as much as digits as its factorization.

13091791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1701, while the sum is 31.

The square root of 13091791 is about 3618.2580062787. The cubic root of 13091791 is about 235.6855850840.

The spelling of 13091791 in words is "thirteen million, ninety-one thousand, seven hundred ninety-one".