243301873 has 2 divisors, whose sum is σ = 243301874. Its totient is φ = 243301872.

The previous prime is 243301871. The next prime is 243301879. The reversal of 243301873 is 378103342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 241087729 + 2214144 = 15527^2 + 1488^2 .

It is a cyclic number.

It is not a de Polignac number, because 243301873 - 2¹ = 243301871 is a prime.

Together with 243301871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (243301871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121650936 + 121650937.

It is an arithmetic number, because the mean of its divisors is an integer number (121650937).

Almost surely, 2^243301873 is an apocalyptic number.

It is an amenable number.

243301873 is a deficient number, since it is larger than the sum of its proper divisors (1).

243301873 is an equidigital number, since it uses as much as digits as its factorization.

243301873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 243301873 is about 15598.1368438670. The cubic root of 243301873 is about 624.2834437494.

The spelling of 243301873 in words is "two hundred forty-three million, three hundred one thousand, eight hundred seventy-three".