13111271 has 2 divisors, whose sum is σ = 13111272. Its totient is φ = 13111270.

The previous prime is 13111237. The next prime is 13111289. The reversal of 13111271 is 17211131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13111271 - 2⁶ = 13111207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13111201) 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, 6555635 + 6555636.

It is an arithmetic number, because the mean of its divisors is an integer number (6555636).

Almost surely, 2^13111271 is an apocalyptic number.

13111271 is a deficient number, since it is larger than the sum of its proper divisors (1).

13111271 is an equidigital number, since it uses as much as digits as its factorization.

13111271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42, while the sum is 17.

The square root of 13111271 is about 3620.9489087807. The cubic root of 13111271 is about 235.8024236926.

The spelling of 13111271 in words is "thirteen million, one hundred eleven thousand, two hundred seventy-one".