43131122432 has 72 divisors (see below), whose sum is σ = 89239535616. Its totient is φ = 20791305216.

The previous prime is 43131122429. The next prime is 43131122443. The reversal of 43131122432 is 23422113134.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779393 + ... + 832895.

Almost surely, 2^43131122432 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 43131122432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44619767808).

43131122432 is an abundant number, since it is smaller than the sum of its proper divisors (46108413184).

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

43131122432 is an equidigital number, since it uses as much as digits as its factorization.

43131122432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53633 (or 53619 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

Adding to 43131122432 its reverse (23422113134), we get a palindrome (66553235566).

The spelling of 43131122432 in words is "forty-three billion, one hundred thirty-one million, one hundred twenty-two thousand, four hundred thirty-two".