20231332320 has 96 divisors (see below), whose sum is σ = 63779794848. Its totient is φ = 5390696448.

The previous prime is 20231332279. The next prime is 20231332327. The reversal of 20231332320 is 2323313202.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20231332327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 606312 + ... + 638808.

It is an arithmetic number, because the mean of its divisors is an integer number (664372863).

Almost surely, 2^20231332320 is an apocalyptic number.

20231332320 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 20231332320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31889897424).

20231332320 is an abundant number, since it is smaller than the sum of its proper divisors (43548462528).

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

20231332320 is a wasteful number, since it uses less digits than its factorization.

20231332320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33812 (or 33804 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 20231332320 its reverse (2323313202), we get a palindrome (22554645522).

The spelling of 20231332320 in words is "twenty billion, two hundred thirty-one million, three hundred thirty-two thousand, three hundred twenty".