2305243 has 4 divisors (see below), whose sum is σ = 2327728. Its totient is φ = 2282760.

The previous prime is 2305169. The next prime is 2305271. The reversal of 2305243 is 3425032.

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 2305243 - 2¹³ = 2297051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2305243.

It is not an unprimeable number, because it can be changed into a prime (2305643) 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, 11088 + ... + 11293.

It is an arithmetic number, because the mean of its divisors is an integer number (581932).

2^2305243 is an apocalyptic number.

2305243 is a deficient number, since it is larger than the sum of its proper divisors (22485).

2305243 is a wasteful number, since it uses less digits than its factorization.

2305243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22484.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 2305243 is about 1518.3026707478. The cubic root of 2305243 is about 132.1008373962.

The spelling of 2305243 in words is "two million, three hundred five thousand, two hundred forty-three".