3212020320 has 192 divisors, whose sum is σ = 10521342720. Its totient is φ = 822970368.

The previous prime is 3212020303. The next prime is 3212020337. The reversal of 3212020320 is 230202123.

It is an interprime number because it is at equal distance from previous prime (3212020303) and next prime (3212020337).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 3212020320.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1472991 + ... + 1475169.

It is an arithmetic number, because the mean of its divisors is an integer number (54798660).

Almost surely, 2^3212020320 is an apocalyptic number.

3212020320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3212020320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5260671360).

3212020320 is an abundant number, since it is smaller than the sum of its proper divisors (7309322400).

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

3212020320 is a wasteful number, since it uses less digits than its factorization.

3212020320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317 (or 2309 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 3212020320 is about 56674.6885302425. The cubic root of 3212020320 is about 1475.4554288373.

Adding to 3212020320 its reverse (230202123), we get a palindrome (3442222443).

The spelling of 3212020320 in words is "three billion, two hundred twelve million, twenty thousand, three hundred twenty".