243020265 has 16 divisors (see below), whose sum is σ = 393519168. Its totient is φ = 128048576.

The previous prime is 243020263. The next prime is 243020273. The reversal of 243020265 is 562020342.

It is a cyclic number.

It is not a de Polignac number, because 243020265 - 2¹ = 243020263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243020263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96354 + ... + 98843.

It is an arithmetic number, because the mean of its divisors is an integer number (24594948).

Almost surely, 2^243020265 is an apocalyptic number.

It is an amenable number.

243020265 is a deficient number, since it is larger than the sum of its proper divisors (150498903).

243020265 is a wasteful number, since it uses less digits than its factorization.

243020265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195288.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 243020265 is about 15589.1072547468. The cubic root of 243020265 is about 624.0424933053.

The spelling of 243020265 in words is "two hundred forty-three million, twenty thousand, two hundred sixty-five".