20310013120 has 112 divisors (see below), whose sum is σ = 50182272000. Its totient is φ = 7820144640.

The previous prime is 20310013109. The next prime is 20310013189. The reversal of 20310013120 is 2131001302.

It is a self number, because there is not a number n which added to its sum of digits gives 20310013120.

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, 3235585 + ... + 3241855.

It is an arithmetic number, because the mean of its divisors is an integer number (448056000).

Almost surely, 2^20310013120 is an apocalyptic number.

20310013120 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 20310013120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25091136000).

20310013120 is an abundant number, since it is smaller than the sum of its proper divisors (29872258880).

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

20310013120 is a wasteful number, since it uses less digits than its factorization.

20310013120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6666 (or 6656 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20310013120 its reverse (2131001302), we get a palindrome (22441014422).

The spelling of 20310013120 in words is "twenty billion, three hundred ten million, thirteen thousand, one hundred twenty".