321084216353 has 2 divisors, whose sum is σ = 321084216354. Its totient is φ = 321084216352.

The previous prime is 321084216319. The next prime is 321084216413. The reversal of 321084216353 is 353612480123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166735022224 + 154349194129 = 408332^2 + 392873^2 .

It is a cyclic number.

It is not a de Polignac number, because 321084216353 - 2⁶ = 321084216289 is a prime.

It is a super-2 number, since 2×321084216353² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (321084216853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160542108176 + 160542108177.

It is an arithmetic number, because the mean of its divisors is an integer number (160542108177).

Almost surely, 2^321084216353 is an apocalyptic number.

It is an amenable number.

321084216353 is a deficient number, since it is larger than the sum of its proper divisors (1).

321084216353 is an equidigital number, since it uses as much as digits as its factorization.

321084216353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 38.

Adding to 321084216353 its reverse (353612480123), we get a palindrome (674696696476).

The spelling of 321084216353 in words is "three hundred twenty-one billion, eighty-four million, two hundred sixteen thousand, three hundred fifty-three".