8720313307 has 4 divisors (see below), whose sum is σ = 8905851936. Its totient is φ = 8534774680.

The previous prime is 8720313271. The next prime is 8720313317. The reversal of 8720313307 is 7033130278.

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

It is a cyclic number.

It is not a de Polignac number, because 8720313307 - 2⁷ = 8720313179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8720313317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92769244 + ... + 92769337.

It is an arithmetic number, because the mean of its divisors is an integer number (2226462984).

Almost surely, 2^8720313307 is an apocalyptic number.

8720313307 is a deficient number, since it is larger than the sum of its proper divisors (185538629).

8720313307 is a wasteful number, since it uses less digits than its factorization.

8720313307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185538628.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 8720313307 is about 93382.6177990315. The cubic root of 8720313307 is about 2058.3095840358.

The spelling of 8720313307 in words is "eight billion, seven hundred twenty million, three hundred thirteen thousand, three hundred seven".