321331103449 has 2 divisors, whose sum is σ = 321331103450. Its totient is φ = 321331103448.

The previous prime is 321331103413. The next prime is 321331103461. The reversal of 321331103449 is 944301133123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 289490269849 + 31840833600 = 538043^2 + 178440^2 .

It is an emirp because it is prime and its reverse (944301133123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321331103449 - 2⁷ = 321331103321 is a prime.

It is not a weakly prime, because it can be changed into another prime (321331100449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160665551724 + 160665551725.

It is an arithmetic number, because the mean of its divisors is an integer number (160665551725).

Almost surely, 2^321331103449 is an apocalyptic number.

It is an amenable number.

321331103449 is a deficient number, since it is larger than the sum of its proper divisors (1).

321331103449 is an equidigital number, since it uses as much as digits as its factorization.

321331103449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 34.

The spelling of 321331103449 in words is "three hundred twenty-one billion, three hundred thirty-one million, one hundred three thousand, four hundred forty-nine".