331232020 has 48 divisors (see below), whose sum is σ = 798795648. Its totient is φ = 113016960.

The previous prime is 331232017. The next prime is 331232023. The reversal of 331232020 is 20232133.

It is an interprime number because it is at equal distance from previous prime (331232017) and next prime (331232023).

It is a junction number, because it is equal to n+sod(n) for n = 331231985 and 331232003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331232023) 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, 23934 + ... + 35146.

It is an arithmetic number, because the mean of its divisors is an integer number (16641576).

Almost surely, 2^331232020 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 331232020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399397824).

331232020 is an abundant number, since it is smaller than the sum of its proper divisors (467563628).

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

331232020 is a wasteful number, since it uses less digits than its factorization.

331232020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11440 (or 11438 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 331232020 is about 18199.7807679104. The cubic root of 331232020 is about 691.9012327436.

Adding to 331232020 its reverse (20232133), we get a palindrome (351464153).

The spelling of 331232020 in words is "three hundred thirty-one million, two hundred thirty-two thousand, twenty".