243023065 has 16 divisors (see below), whose sum is σ = 297380160. Its totient is φ = 190601920.

The previous prime is 243023063. The next prime is 243023071. The reversal of 243023065 is 560320342.

It is a happy number.

It is not a de Polignac number, because 243023065 - 2¹ = 243023063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243023063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135102 + ... + 136888.

It is an arithmetic number, because the mean of its divisors is an integer number (18586260).

Almost surely, 2^243023065 is an apocalyptic number.

It is an amenable number.

243023065 is a deficient number, since it is larger than the sum of its proper divisors (54357095).

243023065 is a wasteful number, since it uses less digits than its factorization.

243023065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2312.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 243023065 is about 15589.1970607854. The cubic root of 243023065 is about 624.0448899672.

The spelling of 243023065 in words is "two hundred forty-three million, twenty-three thousand, sixty-five".