321341399 has 2 divisors, whose sum is σ = 321341400. Its totient is φ = 321341398.

The previous prime is 321341393. The next prime is 321341417. The reversal of 321341399 is 993143123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321341399 - 2⁸ = 321341143 is a prime.

It is a super-2 number, since 2×321341399² = 206520589422554402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321341393) 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, 160670699 + 160670700.

It is an arithmetic number, because the mean of its divisors is an integer number (160670700).

Almost surely, 2^321341399 is an apocalyptic number.

321341399 is a deficient number, since it is larger than the sum of its proper divisors (1).

321341399 is an equidigital number, since it uses as much as digits as its factorization.

321341399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 35.

The square root of 321341399 is about 17925.9978522815. The cubic root of 321341399 is about 684.9447796785.

It can be divided in two parts, 32134 and 1399, that added together give a palindrome (33533).

The spelling of 321341399 in words is "three hundred twenty-one million, three hundred forty-one thousand, three hundred ninety-nine".