321130223 has 2 divisors, whose sum is σ = 321130224. Its totient is φ = 321130222.

The previous prime is 321130189. The next prime is 321130259. The reversal of 321130223 is 322031123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321130223 - 2¹⁰ = 321129199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321130283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160565111 + 160565112.

It is an arithmetic number, because the mean of its divisors is an integer number (160565112).

Almost surely, 2^321130223 is an apocalyptic number.

321130223 is a deficient number, since it is larger than the sum of its proper divisors (1).

321130223 is an equidigital number, since it uses as much as digits as its factorization.

321130223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 321130223 is about 17920.1066682093. The cubic root of 321130223 is about 684.7947050268.

Adding to 321130223 its reverse (322031123), we get a palindrome (643161346).

The spelling of 321130223 in words is "three hundred twenty-one million, one hundred thirty thousand, two hundred twenty-three".