11130811 has 4 divisors (see below), whose sum is σ = 11141800. Its totient is φ = 11119824.

The previous prime is 11130799. The next prime is 11130817. The reversal of 11130811 is 11803111.

It is a semiprime because it is the product of two primes, 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 11130811 - 2⁷ = 11130683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11130817) 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, 3801 + ... + 6058.

It is an arithmetic number, because the mean of its divisors is an integer number (2785450).

Almost surely, 2^11130811 is an apocalyptic number.

11130811 is a deficient number, since it is larger than the sum of its proper divisors (10989).

11130811 is an equidigital number, since it uses as much as digits as its factorization.

11130811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10988.

The product of its (nonzero) digits is 24, while the sum is 16.

The square root of 11130811 is about 3336.2870080375. The cubic root of 11130811 is about 223.2761163789.

Adding to 11130811 its reverse (11803111), we get a palindrome (22933922).

The spelling of 11130811 in words is "eleven million, one hundred thirty thousand, eight hundred eleven".