243339265 has 8 divisors (see below), whose sum is σ = 314469288. Its totient is φ = 179696640.

The previous prime is 243339221. The next prime is 243339281. The reversal of 243339265 is 562933342.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6210064 + 237129201 = 2492^2 + 15399^2 .

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

It is not a de Polignac number, because 243339265 - 2¹⁹ = 242814977 is a prime.

It is a super-3 number, since 3×243339265³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1871776 + ... + 1871905.

It is an arithmetic number, because the mean of its divisors is an integer number (39308661).

Almost surely, 2^243339265 is an apocalyptic number.

It is an amenable number.

243339265 is a deficient number, since it is larger than the sum of its proper divisors (71130023).

243339265 is a wasteful number, since it uses less digits than its factorization.

243339265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743699.

The product of its digits is 116640, while the sum is 37.

The square root of 243339265 is about 15599.3354025099. The cubic root of 243339265 is about 624.3154232412.

The spelling of 243339265 in words is "two hundred forty-three million, three hundred thirty-nine thousand, two hundred sixty-five".