331330032020 has 48 divisors (see below), whose sum is σ = 749448192528. Its totient is φ = 122315596800.

The previous prime is 331330031987. The next prime is 331330032037. The reversal of 331330032020 is 20230033133.

It can be written as a sum of positive squares in 8 ways, for example, as 857476 + 331329174544 = 926^2 + 575612^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 331330031983 and 331330032001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1398422 + ... + 1618098.

It is an arithmetic number, because the mean of its divisors is an integer number (15613504011).

Almost surely, 2^331330032020 is an apocalyptic number.

It is an amenable number.

331330032020 is an abundant number, since it is smaller than the sum of its proper divisors (418118160508).

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

331330032020 is a wasteful number, since it uses less digits than its factorization.

331330032020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225500 (or 225498 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 331330032020 its reverse (20230033133), we get a palindrome (351560065153).

The spelling of 331330032020 in words is "three hundred thirty-one billion, three hundred thirty million, thirty-two thousand, twenty".