43043013 has 12 divisors (see below), whose sum is σ = 66955980. Its totient is φ = 26487936.

The previous prime is 43042991. The next prime is 43043027. The reversal of 43043013 is 31034034.

It can be written as a sum of positive squares in 2 ways, for example, as 13264164 + 29778849 = 3642^2 + 5457^2 .

It is not a de Polignac number, because 43043013 - 2¹³ = 43034821 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43043083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183828 + ... + 184061.

It is an arithmetic number, because the mean of its divisors is an integer number (5579665).

Almost surely, 2^43043013 is an apocalyptic number.

It is an amenable number.

43043013 is a deficient number, since it is larger than the sum of its proper divisors (23912967).

43043013 is a wasteful number, since it uses less digits than its factorization.

43043013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367908 (or 367905 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 43043013 is about 6560.7174150393. The cubic root of 43043013 is about 350.4565823510.

Adding to 43043013 its reverse (31034034), we get a palindrome (74077047).

The spelling of 43043013 in words is "forty-three million, forty-three thousand, thirteen".