43130273 has 4 divisors (see below), whose sum is σ = 43158720. Its totient is φ = 43101828.

The previous prime is 43130261. The next prime is 43130317. The reversal of 43130273 is 37203134.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37203134 = 2 ⋅18601567.

It is a cyclic number.

It is not a de Polignac number, because 43130273 - 2¹⁰ = 43129249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43130573) 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, 11813 + ... + 15026.

It is an arithmetic number, because the mean of its divisors is an integer number (10789680).

Almost surely, 2^43130273 is an apocalyptic number.

It is an amenable number.

43130273 is a deficient number, since it is larger than the sum of its proper divisors (28447).

43130273 is a wasteful number, since it uses less digits than its factorization.

43130273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28446.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 43130273 is about 6567.3642353687. The cubic root of 43130273 is about 350.6932463857.

The spelling of 43130273 in words is "forty-three million, one hundred thirty thousand, two hundred seventy-three".