11681199 has 8 divisors (see below), whose sum is σ = 17305520. Its totient is φ = 7787448.

The previous prime is 11681191. The next prime is 11681213. The reversal of 11681199 is 99118611.

11681199 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11681199 - 2³ = 11681191 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 (11681191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216292 + ... + 216345.

It is an arithmetic number, because the mean of its divisors is an integer number (2163190).

Almost surely, 2^11681199 is an apocalyptic number.

11681199 is a deficient number, since it is larger than the sum of its proper divisors (5624321).

11681199 is an equidigital number, since it uses as much as digits as its factorization.

11681199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432646 (or 432640 counting only the distinct ones).

The product of its digits is 3888, while the sum is 36.

The square root of 11681199 is about 3417.7769090448. The cubic root of 11681199 is about 226.8972022531.

The spelling of 11681199 in words is "eleven million, six hundred eighty-one thousand, one hundred ninety-nine".