243383149 has 2 divisors, whose sum is σ = 243383150. Its totient is φ = 243383148.

The previous prime is 243383143. The next prime is 243383191. The reversal of 243383149 is 941383342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205005124 + 38378025 = 14318^2 + 6195^2 .

It is a cyclic number.

It is not a de Polignac number, because 243383149 - 2¹⁷ = 243252077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243383143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121691574 + 121691575.

It is an arithmetic number, because the mean of its divisors is an integer number (121691575).

Almost surely, 2^243383149 is an apocalyptic number.

It is an amenable number.

243383149 is a deficient number, since it is larger than the sum of its proper divisors (1).

243383149 is an equidigital number, since it uses as much as digits as its factorization.

243383149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 37.

The square root of 243383149 is about 15600.7419374849. The cubic root of 243383149 is about 624.3529508350.

The spelling of 243383149 in words is "two hundred forty-three million, three hundred eighty-three thousand, one hundred forty-nine".