20023200312 has 128 divisors (see below), whose sum is σ = 54927571200. Its totient is φ = 6060054528.

The previous prime is 20023200311. The next prime is 20023200317. The reversal of 20023200312 is 21300232002.

It is a junction number, because it is equal to n+sod(n) for n = 20023200291 and 20023200300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023200311) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1121568 + ... + 1139280.

It is an arithmetic number, because the mean of its divisors is an integer number (429121650).

Almost surely, 2^20023200312 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 20023200312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27463785600).

20023200312 is an abundant number, since it is smaller than the sum of its proper divisors (34904370888).

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

20023200312 is a wasteful number, since it uses less digits than its factorization.

20023200312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17845 (or 17841 counting only the distinct ones).

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

Adding to 20023200312 its reverse (21300232002), we get a palindrome (41323432314).

The spelling of 20023200312 in words is "twenty billion, twenty-three million, two hundred thousand, three hundred twelve".