9721343 has 4 divisors (see below), whose sum is σ = 9984120. Its totient is φ = 9458568.

The previous prime is 9721319. The next prime is 9721357. The reversal of 9721343 is 3431279.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3431279 = 1049 ⋅3271.

It is a cyclic number.

It is not a de Polignac number, because 9721343 - 2⁸ = 9721087 is a prime.

It is a Duffinian number.

It is a congruent number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131333 + ... + 131406.

It is an arithmetic number, because the mean of its divisors is an integer number (2496030).

Almost surely, 2^9721343 is an apocalyptic number.

9721343 is a deficient number, since it is larger than the sum of its proper divisors (262777).

9721343 is a wasteful number, since it uses less digits than its factorization.

9721343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262776.

The product of its digits is 4536, while the sum is 29.

The square root of 9721343 is about 3117.9068299101. The cubic root of 9721343 is about 213.4234268450.

Subtracting from 9721343 its reverse (3431279), we obtain a square (6290064 = 2508²).

The spelling of 9721343 in words is "nine million, seven hundred twenty-one thousand, three hundred forty-three".