2721343 has 4 divisors (see below), whose sum is σ = 2881440. Its totient is φ = 2561248.

The previous prime is 2721319. The next prime is 2721371. The reversal of 2721343 is 3431272.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2721343 - 2¹⁷ = 2590271 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 (2721143) 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, 80023 + ... + 80056.

It is an arithmetic number, because the mean of its divisors is an integer number (720360).

2^2721343 is an apocalyptic number.

2721343 is a deficient number, since it is larger than the sum of its proper divisors (160097).

2721343 is a wasteful number, since it uses less digits than its factorization.

2721343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160096.

The product of its digits is 1008, while the sum is 22.

The square root of 2721343 is about 1649.6493566816. The cubic root of 2721343 is about 139.6136114510.

The spelling of 2721343 in words is "two million, seven hundred twenty-one thousand, three hundred forty-three".