20000321232 has 80 divisors (see below), whose sum is σ = 54084931200. Its totient is φ = 6356686336.

The previous prime is 20000321227. The next prime is 20000321239. The reversal of 20000321232 is 23212300002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000321239) 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, 321394 + ... + 378542.

It is an arithmetic number, because the mean of its divisors is an integer number (676061640).

Almost surely, 2^20000321232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20000321232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27042465600).

20000321232 is an abundant number, since it is smaller than the sum of its proper divisors (34084609968).

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

20000321232 is a wasteful number, since it uses less digits than its factorization.

20000321232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57500 (or 57494 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20000321232 its reverse (23212300002), we get a palindrome (43212621234).

The spelling of 20000321232 in words is "twenty billion, three hundred twenty-one thousand, two hundred thirty-two".