2731993 has 8 divisors (see below), whose sum is σ = 2993760. Its totient is φ = 2472480.

The previous prime is 2731987. The next prime is 2731997. The reversal of 2731993 is 3991372.

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

It is a cyclic number.

It is not a de Polignac number, because 2731993 - 2⁵ = 2731961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2731997) 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, 2973 + ... + 3781.

It is an arithmetic number, because the mean of its divisors is an integer number (374220).

2^2731993 is an apocalyptic number.

It is an amenable number.

2731993 is a deficient number, since it is larger than the sum of its proper divisors (261767).

2731993 is a wasteful number, since it uses less digits than its factorization.

2731993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127.

The product of its digits is 10206, while the sum is 34.

The square root of 2731993 is about 1652.8741633893. The cubic root of 2731993 is about 139.7955007513.

The spelling of 2731993 in words is "two million, seven hundred thirty-one thousand, nine hundred ninety-three".