4321004321 has 16 divisors (see below), whose sum is σ = 4545018000. Its totient is φ = 4102560000.

The previous prime is 4321004251. The next prime is 4321004333. The reversal of 4321004321 is 1234001234.

It can be written as a sum of positive squares in 8 ways, for example, as 592192225 + 3728812096 = 24335^2 + 61064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4321004321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4321004293 and 4321004302.

It is not an unprimeable number, because it can be changed into a prime (4321004341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431471 + ... + 441371.

It is an arithmetic number, because the mean of its divisors is an integer number (284063625).

Almost surely, 2^4321004321 is an apocalyptic number.

It is an amenable number.

4321004321 is a deficient number, since it is larger than the sum of its proper divisors (224013679).

4321004321 is a wasteful number, since it uses less digits than its factorization.

4321004321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10180.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 4321004321 is about 65734.3465853278. The cubic root of 4321004321 is about 1628.7767706691.

Adding to 4321004321 its reverse (1234001234), we get a palindrome (5555005555).

It can be divided in two parts, 432100 and 4321, that multiplied together give a square (1867104100 = 43210²).

The spelling of 4321004321 in words is "four billion, three hundred twenty-one million, four thousand, three hundred twenty-one".