321440410420223 has 2 divisors, whose sum is σ = 321440410420224. Its totient is φ = 321440410420222.

The previous prime is 321440410420189. The next prime is 321440410420231. The reversal of 321440410420223 is 322024014044123.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 321440410420223 - 2⁶ = 321440410420159 is a prime.

It is a super-2 number, since 2×321440410420223² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 321440410420223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321440410422223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160720205210111 + 160720205210112.

It is an arithmetic number, because the mean of its divisors is an integer number (160720205210112).

Almost surely, 2^{321440410420223} is an apocalyptic number.

321440410420223 is a deficient number, since it is larger than the sum of its proper divisors (1).

321440410420223 is an equidigital number, since it uses as much as digits as its factorization.

321440410420223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 321440410420223 its reverse (322024014044123), we get a palindrome (643464424464346).

The spelling of 321440410420223 in words is "three hundred twenty-one trillion, four hundred forty billion, four hundred ten million, four hundred twenty thousand, two hundred twenty-three".