9720382313 has 8 divisors (see below), whose sum is σ = 10113697800. Its totient is φ = 9330942208.

The previous prime is 9720382283. The next prime is 9720382333. The reversal of 9720382313 is 3132830279.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1002798889 + 8717583424 = 31667^2 + 93368^2 .

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 9720382313 - 2⁶ = 9720382249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9720382333) 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, 963728 + ... + 973761.

It is an arithmetic number, because the mean of its divisors is an integer number (1264212225).

Almost surely, 2^9720382313 is an apocalyptic number.

It is an amenable number.

9720382313 is a deficient number, since it is larger than the sum of its proper divisors (393315487).

9720382313 is a wasteful number, since it uses less digits than its factorization.

9720382313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937691.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 9720382313 is about 98591.9992342178. Note that the first 3 decimals coincide. The cubic root of 9720382313 is about 2134.1639627089.

The spelling of 9720382313 in words is "nine billion, seven hundred twenty million, three hundred eighty-two thousand, three hundred thirteen".