243342321 has 8 divisors (see below), whose sum is σ = 325251360. Its totient is φ = 161830752.

The previous prime is 243342317. The next prime is 243342331. The reversal of 243342321 is 123243342.

243342321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243342321 - 2² = 243342317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243342291 and 243342300.

It is not an unprimeable number, because it can be changed into a prime (243342331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97935 + ... + 100388.

It is an arithmetic number, because the mean of its divisors is an integer number (40656420).

Almost surely, 2^243342321 is an apocalyptic number.

It is an amenable number.

243342321 is a deficient number, since it is larger than the sum of its proper divisors (81909039).

243342321 is a wasteful number, since it uses less digits than its factorization.

243342321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198735.

The product of its digits is 3456, while the sum is 24.

The square root of 243342321 is about 15599.4333550934. The cubic root of 243342321 is about 624.3180367391.

Adding to 243342321 its reverse (123243342), we get a palindrome (366585663).

The spelling of 243342321 in words is "two hundred forty-three million, three hundred forty-two thousand, three hundred twenty-one".