43431056 has 20 divisors (see below), whose sum is σ = 89098092. Its totient is φ = 20438016.

The previous prime is 43431053. The next prime is 43431103. The reversal of 43431056 is 65013434.

It can be written as a sum of positive squares in 2 ways, for example, as 12250000 + 31181056 = 3500^2 + 5584^2 .

It is not an unprimeable number, because it can be changed into a prime (43431053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79565 + ... + 80108.

Almost surely, 2^43431056 is an apocalyptic number.

It is an amenable number.

43431056 is an abundant number, since it is smaller than the sum of its proper divisors (45667036).

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

43431056 is a wasteful number, since it uses less digits than its factorization.

43431056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159698 (or 159692 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 43431056 is about 6590.2242753946. The cubic root of 43431056 is about 351.5065831239.

The spelling of 43431056 in words is "forty-three million, four hundred thirty-one thousand, fifty-six".