243481338 has 48 divisors (see below), whose sum is σ = 541232640. Its totient is φ = 79070688.

The previous prime is 243481331. The next prime is 243481363. The reversal of 243481338 is 833184342.

It is a happy number.

243481338 is a `hidden beast` number, since 243 + 4 + 81 + 338 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243481331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 233823 + ... + 234861.

It is an arithmetic number, because the mean of its divisors is an integer number (11275680).

Almost surely, 2^243481338 is an apocalyptic number.

243481338 is an abundant number, since it is smaller than the sum of its proper divisors (297751302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243481338 is a wasteful number, since it uses less digits than its factorization.

243481338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371 (or 1368 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 243481338 is about 15603.8885538189. Note that the first 3 decimals coincide. The cubic root of 243481338 is about 624.4369012507.

The spelling of 243481338 in words is "two hundred forty-three million, four hundred eighty-one thousand, three hundred thirty-eight".