3220031320 has 128 divisors (see below), whose sum is σ = 8041213440. Its totient is φ = 1150755840.

The previous prime is 3220031317. The next prime is 3220031329. The reversal of 3220031320 is 231300223.

It is a junction number, because it is equal to n+sod(n) for n = 3220031294 and 3220031303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220031329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10287484 + ... + 10287796.

It is an arithmetic number, because the mean of its divisors is an integer number (62821980).

Almost surely, 2^3220031320 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 3220031320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4020606720).

3220031320 is an abundant number, since it is smaller than the sum of its proper divisors (4821182120).

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

3220031320 is a wasteful number, since it uses less digits than its factorization.

3220031320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 3220031320 is about 56745.3198070114. The cubic root of 3220031320 is about 1476.6810396503.

Adding to 3220031320 its reverse (231300223), we get a palindrome (3451331543).

It can be divided in two parts, 322003 and 1320, that added together give a palindrome (323323).

The spelling of 3220031320 in words is "three billion, two hundred twenty million, thirty-one thousand, three hundred twenty".