243135430000 has 100 divisors (see below), whose sum is σ = 591648080760. Its totient is φ = 96759712000.

The previous prime is 243135429991. The next prime is 243135430051. The reversal of 243135430000 is 34531342.

It is a tau number, because it is divible by the number of its divisors (100).

It is a super-2 number, since 2×243135430000² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1908291 + ... + 2031709.

Almost surely, 2^243135430000 is an apocalyptic number.

243135430000 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 243135430000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295824040380).

243135430000 is an abundant number, since it is smaller than the sum of its proper divisors (348512650760).

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

243135430000 is a wasteful number, since it uses less digits than its factorization.

243135430000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123644 (or 123623 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 243135430000 its reverse (34531342), we get a palindrome (243169961342).

The spelling of 243135430000 in words is "two hundred forty-three billion, one hundred thirty-five million, four hundred thirty thousand".