243412903 has 4 divisors (see below), whose sum is σ = 244820088. Its totient is φ = 242005720.

The previous prime is 243412891. The next prime is 243412907. The reversal of 243412903 is 309214342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243412903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243412907) 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, 703333 + ... + 703678.

It is an arithmetic number, because the mean of its divisors is an integer number (61205022).

Almost surely, 2^243412903 is an apocalyptic number.

243412903 is a deficient number, since it is larger than the sum of its proper divisors (1407185).

243412903 is a wasteful number, since it uses less digits than its factorization.

243412903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407184.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 243412903 is about 15601.6955168341. The cubic root of 243412903 is about 624.3783925316.

The spelling of 243412903 in words is "two hundred forty-three million, four hundred twelve thousand, nine hundred three".