8313719309 has 6 divisors (see below), whose sum is σ = 9671061294. Its totient is φ = 7126045080.

The previous prime is 8313719303. The next prime is 8313719327. The reversal of 8313719309 is 9039173138.

It can be written as a sum of positive squares in only one way, i.e., 7815090409 + 498628900 = 88403^2 + 22330^2 .

It is not a de Polignac number, because 8313719309 - 2¹⁶ = 8313653773 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8313719309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8313719303) 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 5 ways as a sum of consecutive naturals, for example, 84833822 + ... + 84833919.

It is an arithmetic number, because the mean of its divisors is an integer number (1611843549).

Almost surely, 2^8313719309 is an apocalyptic number.

It is an amenable number.

8313719309 is a deficient number, since it is larger than the sum of its proper divisors (1357341985).

8313719309 is a wasteful number, since it uses less digits than its factorization.

8313719309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169667755 (or 169667748 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 8313719309 is about 91179.5991930212. The cubic root of 8313719309 is about 2025.8087961796.

The spelling of 8313719309 in words is "eight billion, three hundred thirteen million, seven hundred nineteen thousand, three hundred nine".