20333331312 has 160 divisors (see below), whose sum is σ = 60962955264. Its totient is φ = 5720064000.

The previous prime is 20333331299. The next prime is 20333331313. The reversal of 20333331312 is 21313333302.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20333331313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6480208 + ... + 6483344.

Almost surely, 2^20333331312 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 20333331312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30481477632).

20333331312 is an abundant number, since it is smaller than the sum of its proper divisors (40629623952).

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

20333331312 is a wasteful number, since it uses less digits than its factorization.

20333331312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447 (or 3441 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 20333331312 its reverse (21313333302), we get a palindrome (41646664614).

The spelling of 20333331312 in words is "twenty billion, three hundred thirty-three million, three hundred thirty-one thousand, three hundred twelve".