9721323 has 8 divisors (see below), whose sum is σ = 14402000. Its totient is φ = 6480864.

The previous prime is 9721319. The next prime is 9721357. The reversal of 9721323 is 3231279.

It is not a de Polignac number, because 9721323 - 2² = 9721319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 360049 = 9721323 / (9 + 7 + 2 + 1 + 3 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9721373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179998 + ... + 180051.

It is an arithmetic number, because the mean of its divisors is an integer number (1800250).

Almost surely, 2^9721323 is an apocalyptic number.

9721323 is a deficient number, since it is larger than the sum of its proper divisors (4680677).

9721323 is a wasteful number, since it uses less digits than its factorization.

9721323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360058 (or 360052 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 9721323 is about 3117.9036226285. The cubic root of 9721323 is about 213.4232804841.

It can be divided in two parts, 972 and 1323, that multiplied together give a square (1285956 = 1134²).

The spelling of 9721323 in words is "nine million, seven hundred twenty-one thousand, three hundred twenty-three".