20331120320 has 112 divisors (see below), whose sum is σ = 55541680128. Its totient is φ = 6943964160.

The previous prime is 20331120253. The next prime is 20331120361. The reversal of 20331120320 is 2302113302.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571865 + ... + 606375.

Almost surely, 2^20331120320 is an apocalyptic number.

20331120320 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 20331120320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27770840064).

20331120320 is an abundant number, since it is smaller than the sum of its proper divisors (35210559808).

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

20331120320 is a wasteful number, since it uses less digits than its factorization.

20331120320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34798 (or 34788 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20331120320 its reverse (2302113302), we get a palindrome (22633233622).

The spelling of 20331120320 in words is "twenty billion, three hundred thirty-one million, one hundred twenty thousand, three hundred twenty".