2130312320 has 64 divisors (see below), whose sum is σ = 5105255040. Its totient is φ = 850037760.

The previous prime is 2130312299. The next prime is 2130312323. The reversal of 2130312320 is 232130312.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (2130312323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271979 + ... + 279701.

It is an arithmetic number, because the mean of its divisors is an integer number (79769610).

Almost surely, 2^2130312320 is an apocalyptic number.

2130312320 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 2130312320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2552627520).

2130312320 is an abundant number, since it is smaller than the sum of its proper divisors (2974942720).

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

2130312320 is an equidigital number, since it uses as much as digits as its factorization.

2130312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8173 (or 8161 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2130312320 is about 46155.3065204858. The cubic root of 2130312320 is about 1286.7112348503.

Adding to 2130312320 its reverse (232130312), we get a palindrome (2362442632).

The spelling of 2130312320 in words is "two billion, one hundred thirty million, three hundred twelve thousand, three hundred twenty".