20331003331320 has 256 divisors, whose sum is σ = 68353563156480. Its totient is φ = 4835731197440.

The previous prime is 20331003331279. The next prime is 20331003331333. The reversal of 20331003331320 is 2313330013302.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7264297 + ... + 9666023.

It is an arithmetic number, because the mean of its divisors is an integer number (267006106080).

Almost surely, 2^{20331003331320} is an apocalyptic number.

20331003331320 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 20331003331320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34176781578240).

20331003331320 is an abundant number, since it is smaller than the sum of its proper divisors (48022559825160).

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

20331003331320 is a wasteful number, since it uses less digits than its factorization.

20331003331320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401827 (or 2401801 counting only the distinct ones).

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

Adding to 20331003331320 its reverse (2313330013302), we get a palindrome (22644333344622).

The spelling of 20331003331320 in words is "twenty trillion, three hundred thirty-one billion, three million, three hundred thirty-one thousand, three hundred twenty".