2130342321 has 4 divisors (see below), whose sum is σ = 2840456432. Its totient is φ = 1420228212.

The previous prime is 2130342311. The next prime is 2130342337. The reversal of 2130342321 is 1232430312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2130342321 - 2⁹ = 2130341809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2130342311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 355057051 + ... + 355057056.

It is an arithmetic number, because the mean of its divisors is an integer number (710114108).

Almost surely, 2^2130342321 is an apocalyptic number.

It is an amenable number.

2130342321 is a deficient number, since it is larger than the sum of its proper divisors (710114111).

2130342321 is an equidigital number, since it uses as much as digits as its factorization.

2130342321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710114110.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2130342321 is about 46155.6315198915. The cubic root of 2130342321 is about 1286.7172750355.

Adding to 2130342321 its reverse (1232430312), we get a palindrome (3362772633).

The spelling of 2130342321 in words is "two billion, one hundred thirty million, three hundred forty-two thousand, three hundred twenty-one".