243043000201 has 4 divisors (see below), whose sum is σ = 243045523732. Its totient is φ = 243040476672.

The previous prime is 243043000183. The next prime is 243043000217. The reversal of 243043000201 is 102000340342.

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

It can be written as a sum of positive squares in 2 ways, for example, as 145713975625 + 97329024576 = 381725^2 + 311976^2 .

It is a cyclic number.

It is not a de Polignac number, because 243043000201 - 2¹¹ = 243042998153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243043000261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111320 + ... + 1311913.

It is an arithmetic number, because the mean of its divisors is an integer number (60761380933).

Almost surely, 2^243043000201 is an apocalyptic number.

It is an amenable number.

243043000201 is a deficient number, since it is larger than the sum of its proper divisors (2523531).

243043000201 is a wasteful number, since it uses less digits than its factorization.

243043000201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523530.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 243043000201 its reverse (102000340342), we get a palindrome (345043340543).

The spelling of 243043000201 in words is "two hundred forty-three billion, forty-three million, two hundred one", and thus it is an aban number.