43431243132 has 24 divisors (see below), whose sum is σ = 101350596816. Its totient is φ = 14475505408.

The previous prime is 43431243131. The next prime is 43431243139. The reversal of 43431243132 is 23134213434.

It is a happy number.

43431243132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 43431243132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43431243131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79293 + ... + 305204.

It is an arithmetic number, because the mean of its divisors is an integer number (4222941534).

Almost surely, 2^43431243132 is an apocalyptic number.

It is an amenable number.

43431243132 is an abundant number, since it is smaller than the sum of its proper divisors (57919353684).

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

43431243132 is a wasteful number, since it uses less digits than its factorization.

43431243132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393917 (or 393915 counting only the distinct ones).

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

Adding to 43431243132 its reverse (23134213434), we get a palindrome (66565456566).

The spelling of 43431243132 in words is "forty-three billion, four hundred thirty-one million, two hundred forty-three thousand, one hundred thirty-two".