43130081 has 4 divisors (see below), whose sum is σ = 43146132. Its totient is φ = 43114032.

The previous prime is 43130051. The next prime is 43130093. The reversal of 43130081 is 18003134.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23193856 + 19936225 = 4816^2 + 4465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43130081 is a prime.

It is a super-2 number, since 2×43130081² = 3720407774133122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43130041) 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, 2906 + ... + 9731.

It is an arithmetic number, because the mean of its divisors is an integer number (10786533).

Almost surely, 2^43130081 is an apocalyptic number.

It is an amenable number.

43130081 is a deficient number, since it is larger than the sum of its proper divisors (16051).

43130081 is a wasteful number, since it uses less digits than its factorization.

43130081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16050.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 43130081 is about 6567.3496176159. The cubic root of 43130081 is about 350.6927259995.

The spelling of 43130081 in words is "forty-three million, one hundred thirty thousand, eighty-one".