243803 has 8 divisors (see below), whose sum is σ = 288480. Its totient is φ = 201600.

The previous prime is 243799. The next prime is 243809. The reversal of 243803 is 308342.

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

It is not a de Polignac number, because 243803 - 2² = 243799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 243803.

It is not an unprimeable number, because it can be changed into a prime (243809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398 + ... + 803.

It is an arithmetic number, because the mean of its divisors is an integer number (36060).

2²⁴³⁸⁰³ is an apocalyptic number.

243803 is a deficient number, since it is larger than the sum of its proper divisors (44677).

243803 is a wasteful number, since it uses less digits than its factorization.

243803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 243803 is about 493.7641137223. The cubic root of 243803 is about 62.4711760422.

The spelling of 243803 in words is "two hundred forty-three thousand, eight hundred three".