243243201 has 16 divisors (see below), whose sum is σ = 335301120. Its totient is φ = 156746880.

The previous prime is 243243199. The next prime is 243243211. The reversal of 243243201 is 102342342.

It is not a de Polignac number, because 243243201 - 2¹ = 243243199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243243211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4336 + ... + 22478.

It is an arithmetic number, because the mean of its divisors is an integer number (20956320).

Almost surely, 2^243243201 is an apocalyptic number.

It is an amenable number.

243243201 is a deficient number, since it is larger than the sum of its proper divisors (92057919).

243243201 is a wasteful number, since it uses less digits than its factorization.

243243201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18296.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 243243201 is about 15596.2559930260. The cubic root of 243243201 is about 624.2332579419.

Adding to 243243201 its reverse (102342342), we get a palindrome (345585543).

The spelling of 243243201 in words is "two hundred forty-three million, two hundred forty-three thousand, two hundred one".