243324321 has 8 divisors (see below), whose sum is σ = 333201024. Its totient is φ = 157831920.

The previous prime is 243324307. The next prime is 243324329. The reversal of 243324321 is 123423342.

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

It is not a de Polignac number, because 243324321 - 2¹¹ = 243322273 is a prime.

It is a super-2 number, since 2×243324321² = 118413450380222082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243324291 and 243324300.

It is not an unprimeable number, because it can be changed into a prime (243324329) 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, 1095945 + ... + 1096166.

It is an arithmetic number, because the mean of its divisors is an integer number (41650128).

Almost surely, 2^243324321 is an apocalyptic number.

It is an amenable number.

243324321 is a deficient number, since it is larger than the sum of its proper divisors (89876703).

243324321 is a wasteful number, since it uses less digits than its factorization.

243324321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2192151.

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

The square root of 243324321 is about 15598.8564003904. The cubic root of 243324321 is about 624.3026427847.

Adding to 243324321 its reverse (123423342), we get a palindrome (366747663).

The spelling of 243324321 in words is "two hundred forty-three million, three hundred twenty-four thousand, three hundred twenty-one".