11144813 has 4 divisors (see below), whose sum is σ = 11226300. Its totient is φ = 11063328.

The previous prime is 11144801. The next prime is 11144821. The reversal of 11144813 is 31844111.

It is a happy number.

11144813 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 can be written as a sum of positive squares in 2 ways, for example, as 2365444 + 8779369 = 1538^2 + 2963^2 .

It is a cyclic number.

It is not a de Polignac number, because 11144813 - 2⁴ = 11144797 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 (11144863) 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, 40538 + ... + 40811.

It is an arithmetic number, because the mean of its divisors is an integer number (2806575).

Almost surely, 2^11144813 is an apocalyptic number.

It is an amenable number.

11144813 is a deficient number, since it is larger than the sum of its proper divisors (81487).

11144813 is an equidigital number, since it uses as much as digits as its factorization.

11144813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81486.

The product of its digits is 384, while the sum is 23.

The square root of 11144813 is about 3338.3847890859. The cubic root of 11144813 is about 223.3697005206.

Adding to 11144813 its reverse (31844111), we get a palindrome (42988924).

The spelling of 11144813 in words is "eleven million, one hundred forty-four thousand, eight hundred thirteen".