43041013 has 4 divisors (see below), whose sum is σ = 43072128. Its totient is φ = 43009900.

The previous prime is 43040993. The next prime is 43041043. The reversal of 43041013 is 31014034.

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: 31014034 = 2 ⋅15507017.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43041013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43041043) 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, 13381 + ... + 16282.

It is an arithmetic number, because the mean of its divisors is an integer number (10768032).

Almost surely, 2^43041013 is an apocalyptic number.

It is an amenable number.

43041013 is a deficient number, since it is larger than the sum of its proper divisors (31115).

43041013 is a wasteful number, since it uses less digits than its factorization.

43041013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31114.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 43041013 is about 6560.5649909135. The cubic root of 43041013 is about 350.4511542612.

Adding to 43041013 its reverse (31014034), we get a palindrome (74055047).

The spelling of 43041013 in words is "forty-three million, forty-one thousand, thirteen".