243281071 has 16 divisors (see below), whose sum is σ = 271848960. Its totient is φ = 215817280.

The previous prime is 243281047. The next prime is 243281081. The reversal of 243281071 is 170182342.

It is a cyclic number.

It is not a de Polignac number, because 243281071 - 2⁷ = 243280943 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 (243281021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293760 + ... + 294586.

It is an arithmetic number, because the mean of its divisors is an integer number (16990560).

Almost surely, 2^243281071 is an apocalyptic number.

243281071 is a deficient number, since it is larger than the sum of its proper divisors (28567889).

243281071 is a wasteful number, since it uses less digits than its factorization.

243281071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 243281071 is about 15597.4700192050. The cubic root of 243281071 is about 624.2656514294.

The spelling of 243281071 in words is "two hundred forty-three million, two hundred eighty-one thousand, seventy-one".