331030000020 has 96 divisors (see below), whose sum is σ = 976178609280. Its totient is φ = 83584811520.

The previous prime is 331030000003. The next prime is 331030000111. The reversal of 331030000020 is 20000030133.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 331029999960 and 331030000005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2128510 + ... + 2278730.

It is an arithmetic number, because the mean of its divisors is an integer number (10168527180).

Almost surely, 2^331030000020 is an apocalyptic number.

331030000020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331030000020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488089304640).

331030000020 is an abundant number, since it is smaller than the sum of its proper divisors (645148609260).

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

331030000020 is a wasteful number, since it uses less digits than its factorization.

331030000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152185 (or 152183 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 12.

Adding to 331030000020 its reverse (20000030133), we get a palindrome (351030030153).

The spelling of 331030000020 in words is "three hundred thirty-one billion, thirty million, twenty", and thus it is an aban number.