13111291 has 2 divisors, whose sum is σ = 13111292. Its totient is φ = 13111290.

The previous prime is 13111289. The next prime is 13111303. The reversal of 13111291 is 19211131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13111291 - 2¹ = 13111289 is a prime.

Together with 13111289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13111201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6555645 + 6555646.

It is an arithmetic number, because the mean of its divisors is an integer number (6555646).

Almost surely, 2^13111291 is an apocalyptic number.

13111291 is a deficient number, since it is larger than the sum of its proper divisors (1).

13111291 is an equidigital number, since it uses as much as digits as its factorization.

13111291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54, while the sum is 19.

The square root of 13111291 is about 3620.9516704866. The cubic root of 13111291 is about 235.8025435906.

The spelling of 13111291 in words is "thirteen million, one hundred eleven thousand, two hundred ninety-one".