331452220 has 48 divisors (see below), whose sum is σ = 765370368. Its totient is φ = 119568960.

The previous prime is 331452203. The next prime is 331452221. The reversal of 331452220 is 22254133.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 331452191 and 331452200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331452221) 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, 22009 + ... + 33871.

It is an arithmetic number, because the mean of its divisors is an integer number (15945216).

Almost surely, 2^331452220 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 331452220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (382685184).

331452220 is an abundant number, since it is smaller than the sum of its proper divisors (433918148).

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

331452220 is a wasteful number, since it uses less digits than its factorization.

331452220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12010 (or 12008 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 331452220 is about 18205.8292862479. The cubic root of 331452220 is about 692.0545219719.

The spelling of 331452220 in words is "three hundred thirty-one million, four hundred fifty-two thousand, two hundred twenty".