2238281321 has 2 divisors, whose sum is σ = 2238281322. Its totient is φ = 2238281320.

The previous prime is 2238281299. The next prime is 2238281323. The reversal of 2238281321 is 1231828322.

2238281321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2133423721 + 104857600 = 46189^2 + 10240^2 .

It is a cyclic number.

It is not a de Polignac number, because 2238281321 - 2⁶ = 2238281257 is a prime.

Together with 2238281323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2238281323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119140660 + 1119140661.

It is an arithmetic number, because the mean of its divisors is an integer number (1119140661).

Almost surely, 2^2238281321 is an apocalyptic number.

It is an amenable number.

2238281321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2238281321 is an equidigital number, since it uses as much as digits as its factorization.

2238281321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 32.

The square root of 2238281321 is about 47310.4779198012. The cubic root of 2238281321 is about 1308.0918007763.

The spelling of 2238281321 in words is "two billion, two hundred thirty-eight million, two hundred eighty-one thousand, three hundred twenty-one".