13105091 has 2 divisors, whose sum is σ = 13105092. Its totient is φ = 13105090.

The previous prime is 13105051. The next prime is 13105093. The reversal of 13105091 is 19050131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13105091 - 2²² = 8910787 is a prime.

It is a Sophie Germain prime.

Together with 13105093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13105093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6552545 + 6552546.

It is an arithmetic number, because the mean of its divisors is an integer number (6552546).

Almost surely, 2^13105091 is an apocalyptic number.

13105091 is a deficient number, since it is larger than the sum of its proper divisors (1).

13105091 is an equidigital number, since it uses as much as digits as its factorization.

13105091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135, while the sum is 20.

The square root of 13105091 is about 3620.0954407308. The cubic root of 13105091 is about 235.7653693648.

The spelling of 13105091 in words is "thirteen million, one hundred five thousand, ninety-one".