331488220 has 48 divisors (see below), whose sum is σ = 798981120. Its totient is φ = 113166144.

The previous prime is 331488211. The next prime is 331488221. The reversal of 331488220 is 22884133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331488221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28507 + ... + 38413.

It is an arithmetic number, because the mean of its divisors is an integer number (16645440).

Almost surely, 2^331488220 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 331488220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399490560).

331488220 is an abundant number, since it is smaller than the sum of its proper divisors (467492900).

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

331488220 is a wasteful number, since it uses less digits than its factorization.

331488220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10162 (or 10160 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 331488220 is about 18206.8179537227. The cubic root of 331488220 is about 692.0795764235.

The spelling of 331488220 in words is "three hundred thirty-one million, four hundred eighty-eight thousand, two hundred twenty".