243023199 has 8 divisors (see below), whose sum is σ = 324177840. Its totient is φ = 161942016.

The previous prime is 243023191. The next prime is 243023201. The reversal of 243023199 is 991320342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243023199 - 2³ = 243023191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243023191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10114 + ... + 24255.

It is an arithmetic number, because the mean of its divisors is an integer number (40522230).

Almost surely, 2^243023199 is an apocalyptic number.

243023199 is a deficient number, since it is larger than the sum of its proper divisors (81154641).

243023199 is a wasteful number, since it uses less digits than its factorization.

243023199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36729.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 243023199 is about 15589.2013586328. The cubic root of 243023199 is about 624.0450046641.

The spelling of 243023199 in words is "two hundred forty-three million, twenty-three thousand, one hundred ninety-nine".