4328321 has 4 divisors (see below), whose sum is σ = 4359600. Its totient is φ = 4297044.

The previous prime is 4328309. The next prime is 4328327. The reversal of 4328321 is 1238234.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1238234 = 2 ⋅619117.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4328321 is a prime.

It is a d-powerful number, because it can be written as 4¹¹ + 3⁵ + 2 + 8³ + 3⁷ + 2¹⁷ + 1 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4328327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15431 + ... + 15708.

It is an arithmetic number, because the mean of its divisors is an integer number (1089900).

Almost surely, 2^4328321 is an apocalyptic number.

It is an amenable number.

4328321 is a deficient number, since it is larger than the sum of its proper divisors (31279).

4328321 is a wasteful number, since it uses less digits than its factorization.

4328321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31278.

The product of its digits is 1152, while the sum is 23.

The square root of 4328321 is about 2080.4617275980. The cubic root of 4328321 is about 162.9695578413.

The spelling of 4328321 in words is "four million, three hundred twenty-eight thousand, three hundred twenty-one".