313221323203 has 2 divisors, whose sum is σ = 313221323204. Its totient is φ = 313221323202.

The previous prime is 313221323171. The next prime is 313221323209. The reversal of 313221323203 is 302323122313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 313221323203 - 2⁵ = 313221323171 is a prime.

It is not a weakly prime, because it can be changed into another prime (313221323209) 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, 156610661601 + 156610661602.

It is an arithmetic number, because the mean of its divisors is an integer number (156610661602).

Almost surely, 2^313221323203 is an apocalyptic number.

313221323203 is a deficient number, since it is larger than the sum of its proper divisors (1).

313221323203 is an equidigital number, since it uses as much as digits as its factorization.

313221323203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 313221323203 its reverse (302323122313), we get a palindrome (615544445516).

The spelling of 313221323203 in words is "three hundred thirteen billion, two hundred twenty-one million, three hundred twenty-three thousand, two hundred three".