313304393 has 4 divisors (see below), whose sum is σ = 317596308. Its totient is φ = 309012480.

The previous prime is 313304389. The next prime is 313304399. The reversal of 313304393 is 393403313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 186786889 + 126517504 = 13667^2 + 11248^2 .

It is a cyclic number.

It is not a de Polignac number, because 313304393 - 2² = 313304389 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313304399) 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 in 3 ways as a sum of consecutive naturals, for example, 2145848 + ... + 2145993.

It is an arithmetic number, because the mean of its divisors is an integer number (79399077).

Almost surely, 2^313304393 is an apocalyptic number.

It is an amenable number.

313304393 is a deficient number, since it is larger than the sum of its proper divisors (4291915).

313304393 is an equidigital number, since it uses as much as digits as its factorization.

313304393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4291914.

The product of its (nonzero) digits is 8748, while the sum is 29.

The square root of 313304393 is about 17700.4065772513. The cubic root of 313304393 is about 679.1861608834.

The spelling of 313304393 in words is "three hundred thirteen million, three hundred four thousand, three hundred ninety-three".