2316809 has 4 divisors (see below), whose sum is σ = 2527440. Its totient is φ = 2106180.

The previous prime is 2316773. The next prime is 2316817. The reversal of 2316809 is 9086132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2316809 - 2⁸ = 2316553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2312809) 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, 105299 + ... + 105320.

It is an arithmetic number, because the mean of its divisors is an integer number (631860).

2^2316809 is an apocalyptic number.

It is an amenable number.

2316809 is a deficient number, since it is larger than the sum of its proper divisors (210631).

2316809 is a wasteful number, since it uses less digits than its factorization.

2316809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210630.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 2316809 is about 1522.1067636667. The cubic root of 2316809 is about 132.3213969541.

It can be divided in two parts, 2316 and 809, that added together give a 5-th power (3125 = 5⁵).

The spelling of 2316809 in words is "two million, three hundred sixteen thousand, eight hundred nine".