20312302112 has 48 divisors (see below), whose sum is σ = 41379206400. Its totient is φ = 9804875520.

The previous prime is 20312302111. The next prime is 20312302139. The reversal of 20312302112 is 21120321302.

It is not an unprimeable number, because it can be changed into a prime (20312302111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391214 + ... + 440082.

It is an arithmetic number, because the mean of its divisors is an integer number (862066800).

Almost surely, 2^20312302112 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 20312302112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20689603200).

20312302112 is an abundant number, since it is smaller than the sum of its proper divisors (21066904288).

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

20312302112 is a wasteful number, since it uses less digits than its factorization.

20312302112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49329 (or 49321 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20312302112 its reverse (21120321302), we get a palindrome (41432623414).

The spelling of 20312302112 in words is "twenty billion, three hundred twelve million, three hundred two thousand, one hundred twelve".