331022020 has 48 divisors (see below), whose sum is σ = 798634368. Its totient is φ = 112896000.

The previous prime is 331021997. The next prime is 331022023. The reversal of 331022020 is 20220133.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (331022023) 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, 20895 + ... + 33145.

It is an arithmetic number, because the mean of its divisors is an integer number (16638216).

Almost surely, 2^331022020 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 331022020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399317184).

331022020 is an abundant number, since it is smaller than the sum of its proper divisors (467612348).

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

331022020 is a wasteful number, since it uses less digits than its factorization.

331022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12460 (or 12458 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 331022020 is about 18194.0105529265. The cubic root of 331022020 is about 691.7549808041.

Adding to 331022020 its reverse (20220133), we get a palindrome (351242153).

The spelling of 331022020 in words is "three hundred thirty-one million, twenty-two thousand, twenty".