11131187 has 2 divisors, whose sum is σ = 11131188. Its totient is φ = 11131186.

The previous prime is 11131181. The next prime is 11131229. The reversal of 11131187 is 78113111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11131187 - 2⁴ = 11131171 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11131181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5565593 + 5565594.

It is an arithmetic number, because the mean of its divisors is an integer number (5565594).

Almost surely, 2^11131187 is an apocalyptic number.

11131187 is a deficient number, since it is larger than the sum of its proper divisors (1).

11131187 is an equidigital number, since it uses as much as digits as its factorization.

11131187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168, while the sum is 23.

The square root of 11131187 is about 3336.3433576297. The cubic root of 11131187 is about 223.2786304477.

Adding to 11131187 its reverse (78113111), we get a palindrome (89244298).

The spelling of 11131187 in words is "eleven million, one hundred thirty-one thousand, one hundred eighty-seven".