243282397 has 8 divisors (see below), whose sum is σ = 249436152. Its totient is φ = 237139200.

The previous prime is 243282373. The next prime is 243282419. The reversal of 243282397 is 793282342.

It can be written as a sum of positive squares in 4 ways, for example, as 14032516 + 229249881 = 3746^2 + 15141^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243282397 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 (243282337) 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 7 ways as a sum of consecutive naturals, for example, 66147 + ... + 69727.

It is an arithmetic number, because the mean of its divisors is an integer number (31179519).

Almost surely, 2^243282397 is an apocalyptic number.

It is an amenable number.

243282397 is a deficient number, since it is larger than the sum of its proper divisors (6153755).

243282397 is a wasteful number, since it uses less digits than its factorization.

243282397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5279.

The product of its digits is 145152, while the sum is 40.

The square root of 243282397 is about 15597.5125260408. The cubic root of 243282397 is about 624.2667856110.

Subtracting 243282397 from its reverse (793282342), we obtain a palindrome (549999945).

The spelling of 243282397 in words is "two hundred forty-three million, two hundred eighty-two thousand, three hundred ninety-seven".