11311271 has 4 divisors (see below), whose sum is σ = 11320944. Its totient is φ = 11301600.

The previous prime is 11311253. The next prime is 11311283. The reversal of 11311271 is 17211311.

11311271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11311271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2795 + ... + 5516.

It is an arithmetic number, because the mean of its divisors is an integer number (2830236).

Almost surely, 2^11311271 is an apocalyptic number.

11311271 is a deficient number, since it is larger than the sum of its proper divisors (9673).

11311271 is an equidigital number, since it uses as much as digits as its factorization.

11311271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9672.

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

The square root of 11311271 is about 3363.2233051048. The cubic root of 11311271 is about 224.4762864687.

Adding to 11311271 its reverse (17211311), we get a palindrome (28522582).

The spelling of 11311271 in words is "eleven million, three hundred eleven thousand, two hundred seventy-one".