243336241 has 4 divisors (see below), whose sum is σ = 246763584. Its totient is φ = 239908900.

The previous prime is 243336239. The next prime is 243336263. The reversal of 243336241 is 142633342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 243336241 - 2¹ = 243336239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243331241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1713565 + ... + 1713706.

It is an arithmetic number, because the mean of its divisors is an integer number (61690896).

Almost surely, 2^243336241 is an apocalyptic number.

It is an amenable number.

243336241 is a deficient number, since it is larger than the sum of its proper divisors (3427343).

243336241 is an equidigital number, since it uses as much as digits as its factorization.

243336241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3427342.

The product of its digits is 10368, while the sum is 28.

The square root of 243336241 is about 15599.2384750026. The cubic root of 243336241 is about 624.3128370883.

Adding to 243336241 its reverse (142633342), we get a palindrome (385969583).

The spelling of 243336241 in words is "two hundred forty-three million, three hundred thirty-six thousand, two hundred forty-one".