9821313 has 6 divisors (see below), whose sum is σ = 14186354. Its totient is φ = 6547536.

The previous prime is 9821303. The next prime is 9821321. The reversal of 9821313 is 3131289.

It can be written as a sum of positive squares in only one way, i.e., 5461569 + 4359744 = 2337^2 + 2088^2 .

It is not a de Polignac number, because 9821313 - 2⁵ = 9821281 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

9821313 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (9821303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 545620 + ... + 545637.

Almost surely, 2^9821313 is an apocalyptic number.

It is an amenable number.

9821313 is a deficient number, since it is larger than the sum of its proper divisors (4365041).

9821313 is a wasteful number, since it uses less digits than its factorization.

9821313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091263 (or 1091260 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 9821313 is about 3133.8974137645. The cubic root of 9821313 is about 214.1525174144.

The spelling of 9821313 in words is "nine million, eight hundred twenty-one thousand, three hundred thirteen".