313204321 has 8 divisors (see below), whose sum is σ = 324271080. Its totient is φ = 302155392.

The previous prime is 313204279. The next prime is 313204327. The reversal of 313204321 is 123402313.

It can be written as a sum of positive squares in 4 ways, for example, as 59120721 + 254083600 = 7689^2 + 15940^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 313204321 - 2¹⁵ = 313171553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313204327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38421 + ... + 45853.

It is an arithmetic number, because the mean of its divisors is an integer number (40533885).

Almost surely, 2^313204321 is an apocalyptic number.

It is an amenable number.

313204321 is a deficient number, since it is larger than the sum of its proper divisors (11066759).

313204321 is a wasteful number, since it uses less digits than its factorization.

313204321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8915.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 313204321 is about 17697.5795237654. The cubic root of 313204321 is about 679.1138406343.

Adding to 313204321 its reverse (123402313), we get a palindrome (436606634).

The spelling of 313204321 in words is "three hundred thirteen million, two hundred four thousand, three hundred twenty-one".