2731859 has 4 divisors (see below), whose sum is σ = 2942016. Its totient is φ = 2521704.

The previous prime is 2731853. The next prime is 2731889. The reversal of 2731859 is 9581372.

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 2731859 - 2¹² = 2727763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2731853) 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 3 ways as a sum of consecutive naturals, for example, 105059 + ... + 105084.

It is an arithmetic number, because the mean of its divisors is an integer number (735504).

2^2731859 is an apocalyptic number.

2731859 is a deficient number, since it is larger than the sum of its proper divisors (210157).

2731859 is a wasteful number, since it uses less digits than its factorization.

2731859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210156.

The product of its digits is 15120, while the sum is 35.

The square root of 2731859 is about 1652.8336274411. The cubic root of 2731859 is about 139.7932151301.

The spelling of 2731859 in words is "two million, seven hundred thirty-one thousand, eight hundred fifty-nine".