396313321 has 2 divisors, whose sum is σ = 396313322. Its totient is φ = 396313320.

The previous prime is 396313301. The next prime is 396313369. The reversal of 396313321 is 123313693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311875600 + 84437721 = 17660^2 + 9189^2 .

It is an emirp because it is prime and its reverse (123313693) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 396313321 - 2¹⁵ = 396280553 is a prime.

It is not a weakly prime, because it can be changed into another prime (396313301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198156660 + 198156661.

It is an arithmetic number, because the mean of its divisors is an integer number (198156661).

Almost surely, 2^396313321 is an apocalyptic number.

It is an amenable number.

396313321 is a deficient number, since it is larger than the sum of its proper divisors (1).

396313321 is an equidigital number, since it uses as much as digits as its factorization.

396313321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 31.

The square root of 396313321 is about 19907.6196718744. The cubic root of 396313321 is about 734.5356692090.

The spelling of 396313321 in words is "three hundred ninety-six million, three hundred thirteen thousand, three hundred twenty-one".