11791271 has 4 divisors (see below), whose sum is σ = 12109992. Its totient is φ = 11472552.

The previous prime is 11791261. The next prime is 11791277. The reversal of 11791271 is 17219711.

11791271 is digitally balanced in base 3, 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.

It is a cyclic number.

It is not a de Polignac number, because 11791271 - 2⁶ = 11791207 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 (11791277) 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, 159305 + ... + 159378.

It is an arithmetic number, because the mean of its divisors is an integer number (3027498).

Almost surely, 2^11791271 is an apocalyptic number.

11791271 is a deficient number, since it is larger than the sum of its proper divisors (318721).

11791271 is an equidigital number, since it uses as much as digits as its factorization.

11791271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318720.

The product of its digits is 882, while the sum is 29.

The square root of 11791271 is about 3433.8420173328. The cubic root of 11791271 is about 227.6076598680.

The spelling of 11791271 in words is "eleven million, seven hundred ninety-one thousand, two hundred seventy-one".