223031230321 has 2 divisors, whose sum is σ = 223031230322. Its totient is φ = 223031230320.

The previous prime is 223031230319. The next prime is 223031230337. The reversal of 223031230321 is 123032130322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153849079696 + 69182150625 = 392236^2 + 263025^2 .

It is a cyclic number.

It is not a de Polignac number, because 223031230321 - 2¹ = 223031230319 is a prime.

Together with 223031230319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 223031230292 and 223031230301.

It is not a weakly prime, because it can be changed into another prime (223031230361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111515615160 + 111515615161.

It is an arithmetic number, because the mean of its divisors is an integer number (111515615161).

Almost surely, 2^223031230321 is an apocalyptic number.

It is an amenable number.

223031230321 is a deficient number, since it is larger than the sum of its proper divisors (1).

223031230321 is an equidigital number, since it uses as much as digits as its factorization.

223031230321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 223031230321 its reverse (123032130322), we get a palindrome (346063360643).

Subtracting from 223031230321 its reverse (123032130322), we obtain a palindrome (99999099999).

The spelling of 223031230321 in words is "two hundred twenty-three billion, thirty-one million, two hundred thirty thousand, three hundred twenty-one".