3031221120 has 128 divisors (see below), whose sum is σ = 9699588000. Its totient is φ = 805183488.

The previous prime is 3031221113. The next prime is 3031221131. The reversal of 3031221120 is 211221303.

It is a tau number, because it is divible by the number of its divisors (128).

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 3031221120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 513546 + ... + 519414.

Almost surely, 2^3031221120 is an apocalyptic number.

3031221120 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 3031221120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4849794000).

3031221120 is an abundant number, since it is smaller than the sum of its proper divisors (6668366880).

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

3031221120 is a wasteful number, since it uses less digits than its factorization.

3031221120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6160 (or 6148 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 3031221120 is about 55056.5265885889. The cubic root of 3031221120 is about 1447.2354968450.

Adding to 3031221120 its reverse (211221303), we get a palindrome (3242442423).

The spelling of 3031221120 in words is "three billion, thirty-one million, two hundred twenty-one thousand, one hundred twenty".