2302421321 has 2 divisors, whose sum is σ = 2302421322. Its totient is φ = 2302421320.

The previous prime is 2302421309. The next prime is 2302421323. The reversal of 2302421321 is 1231242032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2295847225 + 6574096 = 47915^2 + 2564^2 .

It is a cyclic number.

It is not a de Polignac number, because 2302421321 - 2¹⁰ = 2302420297 is a prime.

It is a super-2 number, since 2×2302421321² = 10602287878790770082, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2302421323, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2302421293 and 2302421302.

It is not a weakly prime, because it can be changed into another prime (2302421323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1151210660 + 1151210661.

It is an arithmetic number, because the mean of its divisors is an integer number (1151210661).

Almost surely, 2^2302421321 is an apocalyptic number.

It is an amenable number.

2302421321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2302421321 is an equidigital number, since it uses as much as digits as its factorization.

2302421321 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2302421321 is about 47983.5526092014. The cubic root of 2302421321 is about 1320.4691707256.

Adding to 2302421321 its reverse (1231242032), we get a palindrome (3533663353).

The spelling of 2302421321 in words is "two billion, three hundred two million, four hundred twenty-one thousand, three hundred twenty-one".