243013385 has 8 divisors (see below), whose sum is σ = 308770056. Its totient is φ = 182974720.

The previous prime is 243013369. The next prime is 243013387. The reversal of 243013385 is 583310342.

243013385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13278736 + 229734649 = 3644^2 + 15157^2 .

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

It is not a de Polignac number, because 243013385 - 2⁴ = 243013369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243013387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1429406 + ... + 1429575.

It is an arithmetic number, because the mean of its divisors is an integer number (38596257).

Almost surely, 2^243013385 is an apocalyptic number.

It is an amenable number.

243013385 is a deficient number, since it is larger than the sum of its proper divisors (65756671).

243013385 is a wasteful number, since it uses less digits than its factorization.

243013385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859003.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 243013385 is about 15588.8865862832. The cubic root of 243013385 is about 624.0366042863.

The spelling of 243013385 in words is "two hundred forty-three million, thirteen thousand, three hundred eighty-five".