43421323 has 16 divisors (see below), whose sum is σ = 49651200. Its totient is φ = 37608480.

The previous prime is 43421321. The next prime is 43421341. The reversal of 43421323 is 32312434.

It is a happy number.

43421323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 43421323 - 2¹ = 43421321 is a prime.

It is a super-2 number, since 2×43421323² = 3770822582140658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43421294 and 43421303.

It is not an unprimeable number, because it can be changed into a prime (43421321) 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 15 ways as a sum of consecutive naturals, for example, 24340 + ... + 26062.

It is an arithmetic number, because the mean of its divisors is an integer number (3103200).

Almost surely, 2^43421323 is an apocalyptic number.

43421323 is a deficient number, since it is larger than the sum of its proper divisors (6229877).

43421323 is a wasteful number, since it uses less digits than its factorization.

43421323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842.

The product of its digits is 1728, while the sum is 22.

The square root of 43421323 is about 6589.4857917747. The cubic root of 43421323 is about 351.4803233497.

Adding to 43421323 its reverse (32312434), we get a palindrome (75733757).

Subtracting from 43421323 its reverse (32312434), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 434213 and 23, that multiplied together give a palindrome (9986899).

The spelling of 43421323 in words is "forty-three million, four hundred twenty-one thousand, three hundred twenty-three".