4431300021 has 32 divisors (see below), whose sum is σ = 6816115200. Its totient is φ = 2841894720.

The previous prime is 4431300011. The next prime is 4431300047. The reversal of 4431300021 is 1200031344.

It is not a de Polignac number, because 4431300021 - 2¹¹ = 4431297973 is a prime.

It is a super-2 number, since 2×4431300021² = 39272839752229200882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4431299967 and 4431300003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4431300001) 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 31 ways as a sum of consecutive naturals, for example, 206676 + ... + 227106.

It is an arithmetic number, because the mean of its divisors is an integer number (213003600).

Almost surely, 2^4431300021 is an apocalyptic number.

It is an amenable number.

4431300021 is a deficient number, since it is larger than the sum of its proper divisors (2384815179).

4431300021 is a wasteful number, since it uses less digits than its factorization.

4431300021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20746 (or 20740 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 4431300021 is about 66568.0104930289. The cubic root of 4431300021 is about 1642.5189355837.

Adding to 4431300021 its reverse (1200031344), we get a palindrome (5631331365).

The spelling of 4431300021 in words is "four billion, four hundred thirty-one million, three hundred thousand, twenty-one".