243406803 has 16 divisors (see below), whose sum is σ = 327950336. Its totient is φ = 160574400.

The previous prime is 243406781. The next prime is 243406817. The reversal of 243406803 is 308604342.

243406803 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 243406803 - 2⁹ = 243406291 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is the 15602-nd Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243406103) by changing a digit.

It is a nontrivial repunit in base 15601.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228450 + ... + 229512.

It is an arithmetic number, because the mean of its divisors is an integer number (20496896).

Almost surely, 2^243406803 is an apocalyptic number.

243406803 is a deficient number, since it is larger than the sum of its proper divisors (84543533).

243406803 is a wasteful number, since it uses less digits than its factorization.

243406803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 243406803 is about 15601.5000240362. The cubic root of 243406803 is about 624.3731767851.

The spelling of 243406803 in words is "two hundred forty-three million, four hundred six thousand, eight hundred three".