321674507263349 has 2 divisors, whose sum is σ = 321674507263350. Its totient is φ = 321674507263348.

The previous prime is 321674507263303. The next prime is 321674507263409. The reversal of 321674507263349 is 943362705476123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189082575532900 + 132591931730449 = 13750730^2 + 11514857^2 .

It is an emirp because it is prime and its reverse (943362705476123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321674507263349 - 2⁴⁴ = 304082321218933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321674507263291 and 321674507263300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321674507262349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160837253631674 + 160837253631675.

It is an arithmetic number, because the mean of its divisors is an integer number (160837253631675).

Almost surely, 2^{321674507263349} is an apocalyptic number.

It is an amenable number.

321674507263349 is a deficient number, since it is larger than the sum of its proper divisors (1).

321674507263349 is an equidigital number, since it uses as much as digits as its factorization.

321674507263349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 137168640, while the sum is 62.

The spelling of 321674507263349 in words is "three hundred twenty-one trillion, six hundred seventy-four billion, five hundred seven million, two hundred sixty-three thousand, three hundred forty-nine".