243203 has 2 divisors, whose sum is σ = 243204. Its totient is φ = 243202.

The previous prime is 243197. The next prime is 243209. The reversal of 243203 is 302342.

243203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (243197) and next prime (243209).

It is a cyclic number.

It is not a de Polignac number, because 243203 - 2¹⁴ = 226819 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (243209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121601 + 121602.

It is an arithmetic number, because the mean of its divisors is an integer number (121602).

2²⁴³²⁰³ is an apocalyptic number.

243203 is a deficient number, since it is larger than the sum of its proper divisors (1).

243203 is an equidigital number, since it uses as much as digits as its factorization.

243203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 243203 is about 493.1561618798. The cubic root of 243203 is about 62.4198866869.

Adding to 243203 its reverse (302342), we get a palindrome (545545).

The spelling of 243203 in words is "two hundred forty-three thousand, two hundred three", and thus it is an iban number.