243433140132 has 144 divisors (see below), whose sum is σ = 718226429760. Its totient is φ = 63601913088.

The previous prime is 243433140107. The next prime is 243433140163. The reversal of 243433140132 is 231041334342.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 243433140132.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 669094 + ... + 966722.

It is an arithmetic number, because the mean of its divisors is an integer number (4987683540).

Almost surely, 2^243433140132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243433140132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359113214880).

243433140132 is an abundant number, since it is smaller than the sum of its proper divisors (474793289628).

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

243433140132 is a wasteful number, since it uses less digits than its factorization.

243433140132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297770 (or 297761 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 243433140132 its reverse (231041334342), we get a palindrome (474474474474).

The spelling of 243433140132 in words is "two hundred forty-three billion, four hundred thirty-three million, one hundred forty thousand, one hundred thirty-two".