20003331312 has 240 divisors, whose sum is σ = 59793696768. Its totient is φ = 6231375360.

The previous prime is 20003331307. The next prime is 20003331319. The reversal of 20003331312 is 21313330002.

20003331312 is a `hidden beast` number, since 20 + 0 + 0 + 3 + 331 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003331319) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26922013 + ... + 26922755.

Almost surely, 2^20003331312 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 20003331312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29896848384).

20003331312 is an abundant number, since it is smaller than the sum of its proper divisors (39790365456).

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

20003331312 is a wasteful number, since it uses less digits than its factorization.

20003331312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988 (or 979 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20003331312 its reverse (21313330002), we get a palindrome (41316661314).

The spelling of 20003331312 in words is "twenty billion, three million, three hundred thirty-one thousand, three hundred twelve".