234206309 has 16 divisors (see below), whose sum is σ = 251475840. Its totient is φ = 217578240.

The previous prime is 234206303. The next prime is 234206317. The reversal of 234206309 is 903602432.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234206309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234206303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289097 + ... + 289905.

It is an arithmetic number, because the mean of its divisors is an integer number (15717240).

Almost surely, 2^234206309 is an apocalyptic number.

It is an amenable number.

234206309 is a deficient number, since it is larger than the sum of its proper divisors (17269531).

234206309 is a wasteful number, since it uses less digits than its factorization.

234206309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180.

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 234206309 is about 15303.8004756988. The cubic root of 234206309 is about 616.4050620910.

The spelling of 234206309 in words is "two hundred thirty-four million, two hundred six thousand, three hundred nine".