243305252 has 24 divisors (see below), whose sum is σ = 430702272. Its totient is φ = 120255200.

The previous prime is 243305239. The next prime is 243305269. The reversal of 243305252 is 252503342.

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, 162218 + ... + 163710.

It is an arithmetic number, because the mean of its divisors is an integer number (17945928).

Almost surely, 2^243305252 is an apocalyptic number.

It is an amenable number.

243305252 is a deficient number, since it is larger than the sum of its proper divisors (187397020).

243305252 is a wasteful number, since it uses less digits than its factorization.

243305252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939 (or 1937 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

The square root of 243305252 is about 15598.2451577092. The cubic root of 243305252 is about 624.2863337723.

Adding to 243305252 its reverse (252503342), we get a palindrome (495808594).

The spelling of 243305252 in words is "two hundred forty-three million, three hundred five thousand, two hundred fifty-two".