32721343 has 2 divisors, whose sum is σ = 32721344. Its totient is φ = 32721342.

The previous prime is 32721329. The next prime is 32721389. The reversal of 32721343 is 34312723.

It is a weak prime.

It is an emirp because it is prime and its reverse (34312723) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32721343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32721313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16360671 + 16360672.

It is an arithmetic number, because the mean of its divisors is an integer number (16360672).

Almost surely, 2^32721343 is an apocalyptic number.

32721343 is a deficient number, since it is larger than the sum of its proper divisors (1).

32721343 is an equidigital number, since it uses as much as digits as its factorization.

32721343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 25.

The square root of 32721343 is about 5720.2572494600. The cubic root of 32721343 is about 319.8480496033.

The spelling of 32721343 in words is "thirty-two million, seven hundred twenty-one thousand, three hundred forty-three".