1311101171 has 2 divisors, whose sum is σ = 1311101172. Its totient is φ = 1311101170.

The previous prime is 1311101147. The next prime is 1311101173. The reversal of 1311101171 is 1711011131.

It is a strong prime.

It is an emirp because it is prime and its reverse (1711011131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1311101171 - 2²⁶ = 1243992307 is a prime.

Together with 1311101173, 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 (1311101173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655550585 + 655550586.

It is an arithmetic number, because the mean of its divisors is an integer number (655550586).

Almost surely, 2^1311101171 is an apocalyptic number.

1311101171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311101171 is an equidigital number, since it uses as much as digits as its factorization.

1311101171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21, while the sum is 17.

The square root of 1311101171 is about 36209.1310445307. The cubic root of 1311101171 is about 1094.4906817307.

The spelling of 1311101171 in words is "one billion, three hundred eleven million, one hundred one thousand, one hundred seventy-one".