20231310320 has 80 divisors (see below), whose sum is σ = 50939552160. Its totient is φ = 7428221952.

The previous prime is 20231310299. The next prime is 20231310353. The reversal of 20231310320 is 2301313202.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 131822 + ... + 240498.

It is an arithmetic number, because the mean of its divisors is an integer number (636744402).

Almost surely, 2^20231310320 is an apocalyptic number.

20231310320 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 20231310320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25469776080).

20231310320 is an abundant number, since it is smaller than the sum of its proper divisors (30708241840).

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

20231310320 is a wasteful number, since it uses less digits than its factorization.

20231310320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108882 (or 108876 counting only the distinct ones).

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

Adding to 20231310320 its reverse (2301313202), we get a palindrome (22532623522).

The spelling of 20231310320 in words is "twenty billion, two hundred thirty-one million, three hundred ten thousand, three hundred twenty".