331230021000 has 512 divisors, whose sum is σ = 1120612147200. Its totient is φ = 81181440000.

The previous prime is 331230020921. The next prime is 331230021053. The reversal of 331230021000 is 120032133.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 127 ways as a sum of consecutive naturals, for example, 633326739 + ... + 633327261.

It is an arithmetic number, because the mean of its divisors is an integer number (2188695600).

Almost surely, 2^331230021000 is an apocalyptic number.

331230021000 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 331230021000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (560306073600).

331230021000 is an abundant number, since it is smaller than the sum of its proper divisors (789382126200).

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

331230021000 is a wasteful number, since it uses less digits than its factorization.

331230021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 331230021000 its reverse (120032133), we get a palindrome (331350053133).

The spelling of 331230021000 in words is "three hundred thirty-one billion, two hundred thirty million, twenty-one thousand".