2130312321 has 24 divisors (see below), whose sum is σ = 3161077920. Its totient is φ = 1381718016.

The previous prime is 2130312299. The next prime is 2130312323. The reversal of 2130312321 is 1232130312.

2130312321 is a `hidden beast` number, since 2 + 1 + 30 + 312 + 321 = 666.

It is not a de Polignac number, because 2130312321 - 2⁶ = 2130312257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2130312294 and 2130312303.

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

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 88750 + ... + 110168.

It is an arithmetic number, because the mean of its divisors is an integer number (131711580).

Almost surely, 2^2130312321 is an apocalyptic number.

It is an amenable number.

2130312321 is a deficient number, since it is larger than the sum of its proper divisors (1030765599).

2130312321 is a wasteful number, since it uses less digits than its factorization.

2130312321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21725 (or 21722 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2130312321 is about 46155.3065313188. The cubic root of 2130312321 is about 1286.7112350517.

Adding to 2130312321 its reverse (1232130312), we get a palindrome (3362442633).

The spelling of 2130312321 in words is "two billion, one hundred thirty million, three hundred twelve thousand, three hundred twenty-one".