9781323 has 8 divisors (see below), whose sum is σ = 13491600. Its totient is φ = 6295968.

The previous prime is 9781319. The next prime is 9781349. The reversal of 9781323 is 3231879.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9781323 - 2² = 9781319 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9781313) 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, 56128 + ... + 56301.

It is an arithmetic number, because the mean of its divisors is an integer number (1686450).

Almost surely, 2^9781323 is an apocalyptic number.

9781323 is a deficient number, since it is larger than the sum of its proper divisors (3710277).

9781323 is a wasteful number, since it uses less digits than its factorization.

9781323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112461.

The product of its digits is 9072, while the sum is 33.

The square root of 9781323 is about 3127.5106714446. The cubic root of 9781323 is about 213.8614630177.

The spelling of 9781323 in words is "nine million, seven hundred eighty-one thousand, three hundred twenty-three".