43131966 has 16 divisors (see below), whose sum is σ = 86355984. Its totient is φ = 14361984.

The previous prime is 43131937. The next prime is 43131997. The reversal of 43131966 is 66913134.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3270 + ... + 9846.

It is an arithmetic number, because the mean of its divisors is an integer number (5397249).

Almost surely, 2^43131966 is an apocalyptic number.

43131966 is an abundant number, since it is smaller than the sum of its proper divisors (43224018).

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

43131966 is a wasteful number, since it uses less digits than its factorization.

43131966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7675.

The product of its digits is 11664, while the sum is 33.

The square root of 43131966 is about 6567.4931290409. The cubic root of 43131966 is about 350.6978349331.

The spelling of 43131966 in words is "forty-three million, one hundred thirty-one thousand, nine hundred sixty-six".