11131889 has 4 divisors (see below), whose sum is σ = 11786724. Its totient is φ = 10477056.

The previous prime is 11131873. The next prime is 11131907. The reversal of 11131889 is 98813111.

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 5841889 + 5290000 = 2417^2 + 2300^2 .

It is a cyclic number.

It is not a de Polignac number, because 11131889 - 2⁴ = 11131873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11131819) 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, 327392 + ... + 327425.

It is an arithmetic number, because the mean of its divisors is an integer number (2946681).

Almost surely, 2^11131889 is an apocalyptic number.

It is an amenable number.

11131889 is a deficient number, since it is larger than the sum of its proper divisors (654835).

11131889 is an equidigital number, since it uses as much as digits as its factorization.

11131889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654834.

The product of its digits is 1728, while the sum is 32.

The square root of 11131889 is about 3336.4485609702. The cubic root of 11131889 is about 223.2833241162.

The spelling of 11131889 in words is "eleven million, one hundred thirty-one thousand, eight hundred eighty-nine".