2831243 has 4 divisors (see below), whose sum is σ = 2847240. Its totient is φ = 2815248.

The previous prime is 2831237. The next prime is 2831263. The reversal of 2831243 is 3421382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3421382 = 2 ⋅1710691.

It is a cyclic number.

It is not a de Polignac number, because 2831243 - 2²⁰ = 1782667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2831263) 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, 7730 + ... + 8087.

It is an arithmetic number, because the mean of its divisors is an integer number (711810).

2^2831243 is an apocalyptic number.

2831243 is a deficient number, since it is larger than the sum of its proper divisors (15997).

2831243 is a wasteful number, since it uses less digits than its factorization.

2831243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15996.

The product of its digits is 1152, while the sum is 23.

The square root of 2831243 is about 1682.6297869704. The cubic root of 2831243 is about 141.4682719258.

The spelling of 2831243 in words is "two million, eight hundred thirty-one thousand, two hundred forty-three".