243133320 has 64 divisors (see below), whose sum is σ = 772312320. Its totient is φ = 61021184.

The previous prime is 243133237. The next prime is 243133333. The reversal of 243133320 is 23331342.

It is a super-2 number, since 2×243133320² = 118227622588444800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57552 + ... + 61631.

It is an arithmetic number, because the mean of its divisors is an integer number (12067380).

Almost surely, 2^243133320 is an apocalyptic number.

243133320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243133320 is an abundant number, since it is smaller than the sum of its proper divisors (529179000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243133320 is a wasteful number, since it uses less digits than its factorization.

243133320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119214 (or 119210 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 243133320 is about 15592.7329227432. The cubic root of 243133320 is about 624.1392481809.

Adding to 243133320 its reverse (23331342), we get a palindrome (266464662).

The spelling of 243133320 in words is "two hundred forty-three million, one hundred thirty-three thousand, three hundred twenty".