11113811 has 4 divisors (see below), whose sum is σ = 11139912. Its totient is φ = 11087712.

The previous prime is 11113793. The next prime is 11113813. The reversal of 11113811 is 11831111.

It is a happy number.

11113811 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.

It is a cyclic number.

It is not a de Polignac number, because 11113811 - 2¹⁸ = 10851667 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 11113811.

It is not an unprimeable number, because it can be changed into a prime (11113813) 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, 12401 + ... + 13266.

It is an arithmetic number, because the mean of its divisors is an integer number (2784978).

Almost surely, 2^11113811 is an apocalyptic number.

11113811 is a deficient number, since it is larger than the sum of its proper divisors (26101).

11113811 is an equidigital number, since it uses as much as digits as its factorization.

11113811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26100.

The product of its digits is 24, while the sum is 17.

The square root of 11113811 is about 3333.7382920679. The cubic root of 11113811 is about 223.1623891762.

Adding to 11113811 its reverse (11831111), we get a palindrome (22944922).

The spelling of 11113811 in words is "eleven million, one hundred thirteen thousand, eight hundred eleven".