43234321 has 4 divisors (see below), whose sum is σ = 46560052. Its totient is φ = 39908592.

The previous prime is 43234309. The next prime is 43234343. The reversal of 43234321 is 12343234.

It is a happy number.

43234321 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8294400 + 34939921 = 2880^2 + 5911^2 .

It is a cyclic number.

It is not a de Polignac number, because 43234321 - 2¹³ = 43226129 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43234292 and 43234301.

It is not an unprimeable number, because it can be changed into a prime (43234351) 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, 1662846 + ... + 1662871.

It is an arithmetic number, because the mean of its divisors is an integer number (11640013).

Almost surely, 2^43234321 is an apocalyptic number.

It is an amenable number.

43234321 is a deficient number, since it is larger than the sum of its proper divisors (3325731).

43234321 is a wasteful number, since it uses less digits than its factorization.

43234321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325730.

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

The square root of 43234321 is about 6575.2810586316. The cubic root of 43234321 is about 350.9750254820.

Adding to 43234321 its reverse (12343234), we get a palindrome (55577555).

The spelling of 43234321 in words is "forty-three million, two hundred thirty-four thousand, three hundred twenty-one".