43213343 has 4 divisors (see below), whose sum is σ = 45092208. Its totient is φ = 41334480.

The previous prime is 43213319. The next prime is 43213367. The reversal of 43213343 is 34331234.

43213343 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.

It is an interprime number because it is at equal distance from previous prime (43213319) and next prime (43213367).

It is a cyclic number.

It is not a de Polignac number, because 43213343 - 2²⁰ = 42164767 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 1878841 = 43213343 / (4 + 3 + 2 + 1 + 3 + 3 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43213243) 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, 939398 + ... + 939443.

It is an arithmetic number, because the mean of its divisors is an integer number (11273052).

Almost surely, 2^43213343 is an apocalyptic number.

43213343 is a deficient number, since it is larger than the sum of its proper divisors (1878865).

43213343 is a wasteful number, since it uses less digits than its factorization.

43213343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878864.

The product of its digits is 2592, while the sum is 23.

The square root of 43213343 is about 6573.6856480973. The cubic root of 43213343 is about 350.9182500231.

Adding to 43213343 its reverse (34331234), we get a palindrome (77544577).

The spelling of 43213343 in words is "forty-three million, two hundred thirteen thousand, three hundred forty-three".