243087361 has 8 divisors (see below), whose sum is σ = 265472064. Its totient is φ = 220750320.

The previous prime is 243087293. The next prime is 243087389. The reversal of 243087361 is 163780342.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 243087361 - 2¹⁹ = 242563073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243087961) 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 7 ways as a sum of consecutive naturals, for example, 790 + ... + 22063.

It is an arithmetic number, because the mean of its divisors is an integer number (33184008).

Almost surely, 2^243087361 is an apocalyptic number.

It is an amenable number.

243087361 is a deficient number, since it is larger than the sum of its proper divisors (22384703).

243087361 is a wasteful number, since it uses less digits than its factorization.

243087361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23831.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 243087361 is about 15591.2591217002. The cubic root of 243087361 is about 624.0999191093.

The spelling of 243087361 in words is "two hundred forty-three million, eighty-seven thousand, three hundred sixty-one".