20231320120 has 64 divisors (see below), whose sum is σ = 49750070400. Its totient is φ = 7343306880.

The previous prime is 20231320073. The next prime is 20231320133. The reversal of 20231320120 is 2102313202.

It is a junction number, because it is equal to n+sod(n) for n = 20231320094 and 20231320103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198651 + ... + 282709.

It is an arithmetic number, because the mean of its divisors is an integer number (777344850).

Almost surely, 2^20231320120 is an apocalyptic number.

20231320120 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 20231320120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24875035200).

20231320120 is an abundant number, since it is smaller than the sum of its proper divisors (29518750280).

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

20231320120 is a wasteful number, since it uses less digits than its factorization.

20231320120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84628 (or 84624 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20231320120 its reverse (2102313202), we get a palindrome (22333633322).

The spelling of 20231320120 in words is "twenty billion, two hundred thirty-one million, three hundred twenty thousand, one hundred twenty".