4431221330 has 8 divisors (see below), whose sum is σ = 7976198412. Its totient is φ = 1772488528.

The previous prime is 4431221321. The next prime is 4431221359. The reversal of 4431221330 is 331221344.

It can be written as a sum of positive squares in 2 ways, for example, as 4035171529 + 396049801 = 63523^2 + 19901^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 4431221296 and 4431221305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221561057 + ... + 221561076.

Almost surely, 2^4431221330 is an apocalyptic number.

4431221330 is a deficient number, since it is larger than the sum of its proper divisors (3544977082).

4431221330 is a wasteful number, since it uses less digits than its factorization.

4431221330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443122140.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 4431221330 is about 66567.4194332333. The cubic root of 4431221330 is about 1642.5092129123.

Adding to 4431221330 its reverse (331221344), we get a palindrome (4762442674).

The spelling of 4431221330 in words is "four billion, four hundred thirty-one million, two hundred twenty-one thousand, three hundred thirty".