243315147 has 8 divisors (see below), whose sum is σ = 324495360. Its totient is φ = 162172520.

The previous prime is 243315119. The next prime is 243315157. The reversal of 243315147 is 741513342.

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 243315147 - 2¹⁴ = 243298763 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243315157) 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, 14122 + ... + 26192.

It is an arithmetic number, because the mean of its divisors is an integer number (40561920).

Almost surely, 2^243315147 is an apocalyptic number.

243315147 is a deficient number, since it is larger than the sum of its proper divisors (81180213).

243315147 is a wasteful number, since it uses less digits than its factorization.

243315147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18793.

The product of its digits is 10080, while the sum is 30.

The square root of 243315147 is about 15598.5623376002. The cubic root of 243315147 is about 624.2947967072.

Adding to 243315147 its reverse (741513342), we get a palindrome (984828489).

The spelling of 243315147 in words is "two hundred forty-three million, three hundred fifteen thousand, one hundred forty-seven".