243116199 has 12 divisors (see below), whose sum is σ = 351406536. Its totient is φ = 161967312.

The previous prime is 243116197. The next prime is 243116239. The reversal of 243116199 is 991611342.

It is a happy number.

243116199 is a `hidden beast` number, since 2 + 4 + 31 + 1 + 619 + 9 = 666.

It is not a de Polignac number, because 243116199 - 2¹ = 243116197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243116197) 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 11 ways as a sum of consecutive naturals, for example, 6144 + ... + 22890.

It is an arithmetic number, because the mean of its divisors is an integer number (29283878).

Almost surely, 2^243116199 is an apocalyptic number.

243116199 is a deficient number, since it is larger than the sum of its proper divisors (108290337).

243116199 is a wasteful number, since it uses less digits than its factorization.

243116199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18366 (or 18363 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 243116199 is about 15592.1839073300. The cubic root of 243116199 is about 624.1245975921.

The spelling of 243116199 in words is "two hundred forty-three million, one hundred sixteen thousand, one hundred ninety-nine".