43432013 has 4 divisors (see below), whose sum is σ = 44080320. Its totient is φ = 42783708.

The previous prime is 43432001. The next prime is 43432019. The reversal of 43432013 is 31023434.

43432013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 43432013 - 2⁸ = 43431757 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 (43432019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324053 + ... + 324186.

It is an arithmetic number, because the mean of its divisors is an integer number (11020080).

Almost surely, 2^43432013 is an apocalyptic number.

It is an amenable number.

43432013 is a deficient number, since it is larger than the sum of its proper divisors (648307).

43432013 is an equidigital number, since it uses as much as digits as its factorization.

43432013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648306.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 43432013 is about 6590.2968825388. The cubic root of 43432013 is about 351.5091649118.

Adding to 43432013 its reverse (31023434), we get a palindrome (74455447).

The spelling of 43432013 in words is "forty-three million, four hundred thirty-two thousand, thirteen".