3221303320 has 64 divisors (see below), whose sum is σ = 7639884000. Its totient is φ = 1219027968.

The previous prime is 3221303303. The next prime is 3221303347. The reversal of 3221303320 is 233031223.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 645796 + ... + 650764.

Almost surely, 2^3221303320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3221303320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3819942000).

3221303320 is an abundant number, since it is smaller than the sum of its proper divisors (4418580680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3221303320 is a wasteful number, since it uses less digits than its factorization.

3221303320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5852 (or 5848 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 3221303320 is about 56756.5266731501. The cubic root of 3221303320 is about 1476.8754571179.

Adding to 3221303320 its reverse (233031223), we get a palindrome (3454334543).

The spelling of 3221303320 in words is "three billion, two hundred twenty-one million, three hundred three thousand, three hundred twenty".