43032123321 has 16 divisors (see below), whose sum is σ = 63069988608. Its totient is φ = 25880987600.

The previous prime is 43032123317. The next prime is 43032123331. The reversal of 43032123321 is 12332123034.

It is a cyclic number.

It is not a de Polignac number, because 43032123321 - 2² = 43032123317 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43032123291 and 43032123300.

It is not an unprimeable number, because it can be changed into a prime (43032123301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4972791 + ... + 4981436.

It is an arithmetic number, because the mean of its divisors is an integer number (3941874288).

Almost surely, 2^43032123321 is an apocalyptic number.

It is an amenable number.

43032123321 is a deficient number, since it is larger than the sum of its proper divisors (20037865287).

43032123321 is a wasteful number, since it uses less digits than its factorization.

43032123321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9954372.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 43032123321 its reverse (12332123034), we get a palindrome (55364246355).

The spelling of 43032123321 in words is "forty-three billion, thirty-two million, one hundred twenty-three thousand, three hundred twenty-one".