985001321 has 2 divisors, whose sum is σ = 985001322. Its totient is φ = 985001320.

The previous prime is 985001317. The next prime is 985001333. The reversal of 985001321 is 123100589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 697224025 + 287777296 = 26405^2 + 16964^2 .

It is an emirp because it is prime and its reverse (123100589) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 985001321 - 2² = 985001317 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (985001621) 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, 492500660 + 492500661.

It is an arithmetic number, because the mean of its divisors is an integer number (492500661).

Almost surely, 2^985001321 is an apocalyptic number.

It is an amenable number.

985001321 is a deficient number, since it is larger than the sum of its proper divisors (1).

985001321 is an equidigital number, since it uses as much as digits as its factorization.

985001321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 985001321 is about 31384.7306982233. The cubic root of 985001321 is about 994.9752343524.

The spelling of 985001321 in words is "nine hundred eighty-five million, one thousand, three hundred twenty-one".