313303321 has 2 divisors, whose sum is σ = 313303322. Its totient is φ = 313303320.

The previous prime is 313303301. The next prime is 313303423. The reversal of 313303321 is 123303313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311910921 + 1392400 = 17661^2 + 1180^2 .

It is a cyclic number.

It is not a de Polignac number, because 313303321 - 2¹¹ = 313301273 is a prime.

It is not a weakly prime, because it can be changed into another prime (313303301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156651660 + 156651661.

It is an arithmetic number, because the mean of its divisors is an integer number (156651661).

Almost surely, 2^313303321 is an apocalyptic number.

It is an amenable number.

313303321 is a deficient number, since it is larger than the sum of its proper divisors (1).

313303321 is an equidigital number, since it uses as much as digits as its factorization.

313303321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 313303321 is about 17700.3762954351. The cubic root of 313303321 is about 679.1853862497.

Adding to 313303321 its reverse (123303313), we get a palindrome (436606634).

The spelling of 313303321 in words is "three hundred thirteen million, three hundred three thousand, three hundred twenty-one".