43430081 has 12 divisors (see below), whose sum is σ = 45476652. Its totient is φ = 41470464.

The previous prime is 43430071. The next prime is 43430083. The reversal of 43430081 is 18003434.

It can be written as a sum of positive squares in 6 ways, for example, as 409600 + 43020481 = 640^2 + 6559^2 .

It is not a de Polignac number, because 43430081 - 2⁶ = 43430017 is a prime.

It is a super-2 number, since 2×43430081² = 3772343871333122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43430083) 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 11 ways as a sum of consecutive naturals, for example, 94805 + ... + 95261.

It is an arithmetic number, because the mean of its divisors is an integer number (3789721).

Almost surely, 2^43430081 is an apocalyptic number.

It is an amenable number.

43430081 is a deficient number, since it is larger than the sum of its proper divisors (2046571).

43430081 is a wasteful number, since it uses less digits than its factorization.

43430081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 43430081 is about 6590.1503017761. The cubic root of 43430081 is about 351.5039527367.

The spelling of 43430081 in words is "forty-three million, four hundred thirty thousand, eighty-one".