43131023994 has 16 divisors (see below), whose sum is σ = 86264844768. Its totient is φ = 14376541872.

The previous prime is 43131023993. The next prime is 43131024011. The reversal of 43131023994 is 49932013134.

43131023994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (43131023993) 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, 121284 + ... + 317760.

It is an arithmetic number, because the mean of its divisors is an integer number (5391552798).

Almost surely, 2^43131023994 is an apocalyptic number.

43131023994 is an abundant number, since it is smaller than the sum of its proper divisors (43133820774).

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

43131023994 is a wasteful number, since it uses less digits than its factorization.

43131023994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233069.

The product of its (nonzero) digits is 69984, while the sum is 39.

The spelling of 43131023994 in words is "forty-three billion, one hundred thirty-one million, twenty-three thousand, nine hundred ninety-four".