243324100 has 72 divisors (see below), whose sum is σ = 548589888. Its totient is φ = 93609600.

The previous prime is 243324073. The next prime is 243324119. The reversal of 243324100 is 1423342.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 304902 + ... + 305698.

It is an arithmetic number, because the mean of its divisors is an integer number (7619304).

Almost surely, 2^243324100 is an apocalyptic number.

243324100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243324100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274294944).

243324100 is an abundant number, since it is smaller than the sum of its proper divisors (305265788).

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

243324100 is a wasteful number, since it uses less digits than its factorization.

243324100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 243324100 is about 15598.8493165361. The cubic root of 243324100 is about 624.3024537765.

Adding to 243324100 its reverse (1423342), we get a palindrome (244747442).

The spelling of 243324100 in words is "two hundred forty-three million, three hundred twenty-four thousand, one hundred".