2100131320 has 64 divisors (see below), whose sum is σ = 5411520000. Its totient is φ = 718554240.

The previous prime is 2100131263. The next prime is 2100131323. The reversal of 2100131320 is 231310012.

It is a super-2 number, since 2×2100131320² = 8821103122489884800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2100131320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100131323) 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, 132205 + ... + 147235.

It is an arithmetic number, because the mean of its divisors is an integer number (84555000).

Almost surely, 2^2100131320 is an apocalyptic number.

2100131320 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 2100131320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2705760000).

2100131320 is an abundant number, since it is smaller than the sum of its proper divisors (3311388680).

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

2100131320 is a wasteful number, since it uses less digits than its factorization.

2100131320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15548 (or 15544 counting only the distinct ones).

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

The square root of 2100131320 is about 45827.1897458267. The cubic root of 2100131320 is about 1280.6058573924.

Adding to 2100131320 its reverse (231310012), we get a palindrome (2331441332).

The spelling of 2100131320 in words is "two billion, one hundred million, one hundred thirty-one thousand, three hundred twenty".