11791311 has 20 divisors (see below), whose sum is σ = 18352152. Its totient is φ = 6733776.

The previous prime is 11791291. The next prime is 11791321. The reversal of 11791311 is 11319711.

11791311 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11791311 - 2⁵ = 11791279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11791321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6385 + ... + 8021.

Almost surely, 2^11791311 is an apocalyptic number.

11791311 is a deficient number, since it is larger than the sum of its proper divisors (6560841).

11791311 is an frugal number, since it uses more digits than its factorization.

11791311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668 (or 1647 counting only the distinct ones).

The product of its digits is 189, while the sum is 24.

The square root of 11791311 is about 3433.8478417076. The cubic root of 11791311 is about 227.6079172419.

The spelling of 11791311 in words is "eleven million, seven hundred ninety-one thousand, three hundred eleven".