243434000000 has 224 divisors, whose sum is σ = 616773355200. Its totient is φ = 95676800000.

The previous prime is 243433999957. The next prime is 243434000039. The reversal of 243434000000 is 434342.

It is a happy number.

It is a super-2 number, since 2×243434000000² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 117998969 + ... + 118001031.

Almost surely, 2^243434000000 is an apocalyptic number.

243434000000 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 243434000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308386677600).

243434000000 is an abundant number, since it is smaller than the sum of its proper divisors (373339355200).

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

243434000000 is an frugal number, since it uses more digits than its factorization.

243434000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166 (or 2129 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 243434000000 its reverse (434342), we get a palindrome (243434434342).

The spelling of 243434000000 in words is "two hundred forty-three billion, four hundred thirty-four million", and thus it is an aban number.