243340201 has 16 divisors (see below), whose sum is σ = 277426240. Its totient is φ = 211584960.

The previous prime is 243340187. The next prime is 243340213. The reversal of 243340201 is 102043342.

It is a cyclic number.

It is not a de Polignac number, because 243340201 - 2⁵ = 243340169 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (243340271) 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, 41986 + ... + 47428.

It is an arithmetic number, because the mean of its divisors is an integer number (17339140).

Almost surely, 2^243340201 is an apocalyptic number.

It is an amenable number.

243340201 is a deficient number, since it is larger than the sum of its proper divisors (34086039).

243340201 is a wasteful number, since it uses less digits than its factorization.

243340201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5656.

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

The square root of 243340201 is about 15599.3654037592. The cubic root of 243340201 is about 624.3162237128.

Adding to 243340201 its reverse (102043342), we get a palindrome (345383543).

The spelling of 243340201 in words is "two hundred forty-three million, three hundred forty thousand, two hundred one".