2321430221 has 4 divisors (see below), whose sum is σ = 2532469344. Its totient is φ = 2110391100.

The previous prime is 2321430217. The next prime is 2321430239. The reversal of 2321430221 is 1220341232.

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 a cyclic number.

It is not a de Polignac number, because 2321430221 - 2² = 2321430217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2321430193 and 2321430202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321430211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105519545 + ... + 105519566.

It is an arithmetic number, because the mean of its divisors is an integer number (633117336).

Almost surely, 2^2321430221 is an apocalyptic number.

It is an amenable number.

2321430221 is a deficient number, since it is larger than the sum of its proper divisors (211039123).

2321430221 is a wasteful number, since it uses less digits than its factorization.

2321430221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211039122.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2321430221 is about 48181.2227013803. Note that the first 3 decimals coincide. The cubic root of 2321430221 is about 1324.0931677561.

Adding to 2321430221 its reverse (1220341232), we get a palindrome (3541771453).

It can be divided in two parts, 23214 and 30221, that added together give a palindrome (53435).

The spelling of 2321430221 in words is "two billion, three hundred twenty-one million, four hundred thirty thousand, two hundred twenty-one".