313221203 has 2 divisors, whose sum is σ = 313221204. Its totient is φ = 313221202.

The previous prime is 313221191. The next prime is 313221253. The reversal of 313221203 is 302122313.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 313221203 - 2⁴ = 313221187 is a prime.

It is not a weakly prime, because it can be changed into another prime (313221253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156610601 + 156610602.

It is an arithmetic number, because the mean of its divisors is an integer number (156610602).

Almost surely, 2^313221203 is an apocalyptic number.

313221203 is a deficient number, since it is larger than the sum of its proper divisors (1).

313221203 is an equidigital number, since it uses as much as digits as its factorization.

313221203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 313221203 is about 17698.0564752178. The cubic root of 313221203 is about 679.1260420346.

Adding to 313221203 its reverse (302122313), we get a palindrome (615343516).

The spelling of 313221203 in words is "three hundred thirteen million, two hundred twenty-one thousand, two hundred three".