2343209 has 4 divisors (see below), whose sum is σ = 2556240. Its totient is φ = 2130180.

The previous prime is 2343203. The next prime is 2343223. The reversal of 2343209 is 9023432.

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 2343209 - 2⁸ = 2342953 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2343203) 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, 106499 + ... + 106520.

It is an arithmetic number, because the mean of its divisors is an integer number (639060).

2^2343209 is an apocalyptic number.

It is an amenable number.

2343209 is a deficient number, since it is larger than the sum of its proper divisors (213031).

2343209 is a wasteful number, since it uses less digits than its factorization.

2343209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213030.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 2343209 is about 1530.7543891820. The cubic root of 2343209 is about 132.8220999474.

It can be divided in two parts, 2343 and 209, that added together give a palindrome (2552).

The spelling of 2343209 in words is "two million, three hundred forty-three thousand, two hundred nine".