243315052 has 24 divisors (see below), whose sum is σ = 438036480. Its totient is φ = 118199760.

The previous prime is 243315049. The next prime is 243315089. The reversal of 243315052 is 250513342.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21477 + ... + 30787.

It is an arithmetic number, because the mean of its divisors is an integer number (18251520).

Almost surely, 2^243315052 is an apocalyptic number.

It is an amenable number.

243315052 is a deficient number, since it is larger than the sum of its proper divisors (194721428).

243315052 is a wasteful number, since it uses less digits than its factorization.

243315052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9501 (or 9499 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 243315052 is about 15598.5592924475. The cubic root of 243315052 is about 624.2947154573.

Adding to 243315052 its reverse (250513342), we get a palindrome (493828394).

The spelling of 243315052 in words is "two hundred forty-three million, three hundred fifteen thousand, fifty-two".