11530911 has 8 divisors (see below), whose sum is σ = 17570944. Its totient is φ = 6589080.

The previous prime is 11530907. The next prime is 11530921. The reversal of 11530911 is 11903511.

11530911 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11530911 - 2² = 11530907 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 549091 = 11530911 / (1 + 1 + 5 + 3 + 0 + 9 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11530921) 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 7 ways as a sum of consecutive naturals, for example, 274525 + ... + 274566.

It is an arithmetic number, because the mean of its divisors is an integer number (2196368).

Almost surely, 2^11530911 is an apocalyptic number.

11530911 is a deficient number, since it is larger than the sum of its proper divisors (6040033).

11530911 is an equidigital number, since it uses as much as digits as its factorization.

11530911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549101.

The product of its (nonzero) digits is 135, while the sum is 21.

The square root of 11530911 is about 3395.7195113849. The cubic root of 11530911 is about 225.9199275162.

The spelling of 11530911 in words is "eleven million, five hundred thirty thousand, nine hundred eleven".