199103911 has 4 divisors (see below), whose sum is σ = 199454400. Its totient is φ = 198753424.

The previous prime is 199103903. The next prime is 199103953. The reversal of 199103911 is 119301991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 199103911 - 2³ = 199103903 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 (199104911) 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 3 ways as a sum of consecutive naturals, for example, 174391 + ... + 175528.

It is an arithmetic number, because the mean of its divisors is an integer number (49863600).

Almost surely, 2^199103911 is an apocalyptic number.

199103911 is a deficient number, since it is larger than the sum of its proper divisors (350489).

199103911 is an equidigital number, since it uses as much as digits as its factorization.

199103911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350488.

The product of its (nonzero) digits is 2187, while the sum is 34.

The square root of 199103911 is about 14110.4185267482. The cubic root of 199103911 is about 583.9288466120.

The spelling of 199103911 in words is "one hundred ninety-nine million, one hundred three thousand, nine hundred eleven".