243434431000 has 128 divisors (see below), whose sum is σ = 575657409600. Its totient is φ = 96347596800.

The previous prime is 243434430971. The next prime is 243434431001. The reversal of 243434431000 is 134434342.

It is a super-2 number, since 2×243434431000² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243434431000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243434431001) 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 31 ways as a sum of consecutive naturals, for example, 82827531 + ... + 82830469.

Almost surely, 2^243434431000 is an apocalyptic number.

243434431000 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 243434431000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287828704800).

243434431000 is an abundant number, since it is smaller than the sum of its proper divisors (332222978600).

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

243434431000 is a wasteful number, since it uses less digits than its factorization.

243434431000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3806 (or 3792 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 243434431000 its reverse (134434342), we get a palindrome (243568865342).

The spelling of 243434431000 in words is "two hundred forty-three billion, four hundred thirty-four million, four hundred thirty-one thousand".