3012320220 has 432 divisors, whose sum is σ = 11073742848. Its totient is φ = 598440960.

The previous prime is 3012320177. The next prime is 3012320263. The reversal of 3012320220 is 220232103.

It is an interprime number because it is at equal distance from previous prime (3012320177) and next prime (3012320263).

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 3012320220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 81414042 + ... + 81414078.

It is an arithmetic number, because the mean of its divisors is an integer number (25633664).

Almost surely, 2^3012320220 is an apocalyptic number.

3012320220 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 3012320220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5536871424).

3012320220 is an abundant number, since it is smaller than the sum of its proper divisors (8061422628).

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

3012320220 is a wasteful number, since it uses less digits than its factorization.

3012320220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150 (or 98 counting only the distinct ones).

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

The square root of 3012320220 is about 54884.6082248931. The cubic root of 3012320220 is about 1444.2211884579.

Adding to 3012320220 its reverse (220232103), we get a palindrome (3232552323).

The spelling of 3012320220 in words is "three billion, twelve million, three hundred twenty thousand, two hundred twenty".