243000206 has 4 divisors (see below), whose sum is σ = 364500312. Its totient is φ = 121500102.

The previous prime is 243000203. The next prime is 243000209. The reversal of 243000206 is 602000342.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (243000203) and next prime (243000209).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243000203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60750050 + ... + 60750053.

It is an arithmetic number, because the mean of its divisors is an integer number (91125078).

Almost surely, 2^243000206 is an apocalyptic number.

243000206 is a deficient number, since it is larger than the sum of its proper divisors (121500106).

243000206 is a wasteful number, since it uses less digits than its factorization.

243000206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121500105.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 243000206 is about 15588.4638755716. The cubic root of 243000206 is about 624.0253232518.

Adding to 243000206 its reverse (602000342), we get a palindrome (845000548).

The spelling of 243000206 in words is "two hundred forty-three million, two hundred six", and thus it is an aban number.