243443100 has 72 divisors (see below), whose sum is σ = 705927040. Its totient is φ = 64774080.

The previous prime is 243443089. The next prime is 243443113. The reversal of 243443100 is 1344342.

243443100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×243443100² = 118529085875220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 264441 + ... + 265359.

Almost surely, 2^243443100 is an apocalyptic number.

243443100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243443100 is an abundant number, since it is smaller than the sum of its proper divisors (462483940).

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

243443100 is a wasteful number, since it uses less digits than its factorization.

243443100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819 (or 1812 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 243443100 is about 15602.6632342046. The cubic root of 243443100 is about 624.4042109037.

Adding to 243443100 its reverse (1344342), we get a palindrome (244787442).

The spelling of 243443100 in words is "two hundred forty-three million, four hundred forty-three thousand, one hundred".