4320324021 has 16 divisors (see below), whose sum is σ = 6403658240. Its totient is φ = 2572896960.

The previous prime is 4320324011. The next prime is 4320324023. The reversal of 4320324021 is 1204230234.

It is not a de Polignac number, because 4320324021 - 2¹⁸ = 4320061877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4320324023) 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, 1785526 + ... + 1787943.

It is an arithmetic number, because the mean of its divisors is an integer number (400228640).

Almost surely, 2^4320324021 is an apocalyptic number.

It is an amenable number.

4320324021 is a deficient number, since it is larger than the sum of its proper divisors (2083334219).

4320324021 is a wasteful number, since it uses less digits than its factorization.

4320324021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3573516.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 4320324021 is about 65729.1717656628. The cubic root of 4320324021 is about 1628.6912878422.

Adding to 4320324021 its reverse (1204230234), we get a palindrome (5524554255).

The spelling of 4320324021 in words is "four billion, three hundred twenty million, three hundred twenty-four thousand, twenty-one".