2131130320 has 160 divisors (see below), whose sum is σ = 5723633664. Its totient is φ = 730329600.

The previous prime is 2131130311. The next prime is 2131130333. The reversal of 2131130320 is 230311312.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 2131130294 and 2131130303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1436299 + ... + 1437781.

Almost surely, 2^2131130320 is an apocalyptic number.

2131130320 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 2131130320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2861816832).

2131130320 is an abundant number, since it is smaller than the sum of its proper divisors (3592503344).

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

2131130320 is a wasteful number, since it uses less digits than its factorization.

2131130320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1601 (or 1595 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 2131130320 is about 46164.1670562786. The cubic root of 2131130320 is about 1286.8759047740.

Adding to 2131130320 its reverse (230311312), we get a palindrome (2361441632).

The spelling of 2131130320 in words is "two billion, one hundred thirty-one million, one hundred thirty thousand, three hundred twenty".