20033331231320 has 192 divisors, whose sum is σ = 52159973090400. Its totient is φ = 6900497049600.

The previous prime is 20033331231313. The next prime is 20033331231343. The reversal of 20033331231320 is 2313213333002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20033331231320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1261775222 + ... + 1261791098.

Almost surely, 2^{20033331231320} is an apocalyptic number.

20033331231320 is a gapful number since it is divisible by the number (20) 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 20033331231320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26079986545200).

20033331231320 is an abundant number, since it is smaller than the sum of its proper divisors (32126641859080).

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

20033331231320 is a wasteful number, since it uses less digits than its factorization.

20033331231320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29650 (or 29635 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 20033331231320 its reverse (2313213333002), we get a palindrome (22346544564322).

The spelling of 20033331231320 in words is "twenty trillion, thirty-three billion, three hundred thirty-one million, two hundred thirty-one thousand, three hundred twenty".