243452313 has 24 divisors (see below), whose sum is σ = 379721160. Its totient is φ = 149414400.

The previous prime is 243452243. The next prime is 243452329. The reversal of 243452313 is 313254342.

243452313 is a `hidden beast` number, since 2 + 4 + 345 + 2 + 313 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 99740169 + 143712144 = 9987^2 + 11988^2 .

It is not a de Polignac number, because 243452313 - 2¹⁰ = 243451289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243452333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44323 + ... + 49511.

It is an arithmetic number, because the mean of its divisors is an integer number (15821715).

Almost surely, 2^243452313 is an apocalyptic number.

It is an amenable number.

243452313 is a deficient number, since it is larger than the sum of its proper divisors (136268847).

243452313 is a wasteful number, since it uses less digits than its factorization.

243452313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5609 (or 5606 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 243452313 is about 15602.9584694698. The cubic root of 243452313 is about 624.4120875744.

The spelling of 243452313 in words is "two hundred forty-three million, four hundred fifty-two thousand, three hundred thirteen".