11811841 has 4 divisors (see below), whose sum is σ = 11818800. Its totient is φ = 11804884.

The previous prime is 11811797. The next prime is 11811847. The reversal of 11811841 is 14811811.

11811841 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11811841 - 2¹¹ = 11809793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11811847) 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, 930 + ... + 4948.

It is an arithmetic number, because the mean of its divisors is an integer number (2954700).

Almost surely, 2^11811841 is an apocalyptic number.

It is an amenable number.

11811841 is a deficient number, since it is larger than the sum of its proper divisors (6959).

11811841 is an equidigital number, since it uses as much as digits as its factorization.

11811841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6958.

The product of its digits is 256, while the sum is 25.

The square root of 11811841 is about 3436.8358994866. The cubic root of 11811841 is about 227.7399376540.

The spelling of 11811841 in words is "eleven million, eight hundred eleven thousand, eight hundred forty-one".