243340304 has 10 divisors (see below), whose sum is σ = 471471870. Its totient is φ = 121670144.

The previous prime is 243340283. The next prime is 243340319. The reversal of 243340304 is 403043342.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 224400400 + 18939904 = 14980^2 + 4352^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 243340304.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7604369 + ... + 7604400.

It is an arithmetic number, because the mean of its divisors is an integer number (47147187).

Almost surely, 2^243340304 is an apocalyptic number.

It is an amenable number.

243340304 is a deficient number, since it is larger than the sum of its proper divisors (228131566).

243340304 is a wasteful number, since it uses less digits than its factorization.

243340304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15208777 (or 15208771 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 243340304 is about 15599.3687051752. The cubic root of 243340304 is about 624.3163117987.

Adding to 243340304 its reverse (403043342), we get a palindrome (646383646).

The spelling of 243340304 in words is "two hundred forty-three million, three hundred forty thousand, three hundred four".