243241263 has 12 divisors (see below), whose sum is σ = 351505440. Its totient is φ = 162088416.

The previous prime is 243241223. The next prime is 243241267. The reversal of 243241263 is 362142342.

243241263 is a `hidden beast` number, since 243 + 2 + 412 + 6 + 3 = 666.

It is not a de Polignac number, because 243241263 - 2¹⁴ = 243224879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243241267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22170 + ... + 31272.

It is an arithmetic number, because the mean of its divisors is an integer number (29292120).

Almost surely, 2^243241263 is an apocalyptic number.

243241263 is a deficient number, since it is larger than the sum of its proper divisors (108264177).

243241263 is a wasteful number, since it uses less digits than its factorization.

243241263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12078 (or 12075 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 243241263 is about 15596.1938626064. The cubic root of 243241263 is about 624.2316001124.

The spelling of 243241263 in words is "two hundred forty-three million, two hundred forty-one thousand, two hundred sixty-three".