243040340200 has 192 divisors, whose sum is σ = 695374243200. Its totient is φ = 77096755200.

The previous prime is 243040340173. The next prime is 243040340201. The reversal of 243040340200 is 2043040342.

It is not an unprimeable number, because it can be changed into a prime (243040340201) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1317660 + ... + 1490740.

It is an arithmetic number, because the mean of its divisors is an integer number (3621740850).

Almost surely, 2^243040340200 is an apocalyptic number.

243040340200 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 243040340200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347687121600).

243040340200 is an abundant number, since it is smaller than the sum of its proper divisors (452333903000).

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

243040340200 is a wasteful number, since it uses less digits than its factorization.

243040340200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173180 (or 173171 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 243040340200 its reverse (2043040342), we get a palindrome (245083380542).

The spelling of 243040340200 in words is "two hundred forty-three billion, forty million, three hundred forty thousand, two hundred".