313347709 has 4 divisors (see below), whose sum is σ = 321816604. Its totient is φ = 304878816.

The previous prime is 313347703. The next prime is 313347719. The reversal of 313347709 is 907743313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 907743313 = 149 ⋅6092237.

It can be written as a sum of positive squares in 2 ways, for example, as 110712484 + 202635225 = 10522^2 + 14235^2 .

It is not a de Polignac number, because 313347709 - 2¹⁷ = 313216637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 8468857 = 313347709 / (3 + 1 + 3 + 3 + 4 + 7 + 7 + 0 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313347703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4234392 + ... + 4234465.

It is an arithmetic number, because the mean of its divisors is an integer number (80454151).

Almost surely, 2^313347709 is an apocalyptic number.

It is an amenable number.

313347709 is a deficient number, since it is larger than the sum of its proper divisors (8468895).

313347709 is an equidigital number, since it uses as much as digits as its factorization.

313347709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8468894.

The product of its (nonzero) digits is 47628, while the sum is 37.

The square root of 313347709 is about 17701.6301226751. The cubic root of 313347709 is about 679.2174598083.

The spelling of 313347709 in words is "three hundred thirteen million, three hundred forty-seven thousand, seven hundred nine".