338281281 has 12 divisors (see below), whose sum is σ = 526215508. Its totient is φ = 208173024.

The previous prime is 338281267. The next prime is 338281313. The reversal of 338281281 is 182182833.

It can be written as a sum of positive squares in 2 ways, for example, as 147841281 + 190440000 = 12159^2 + 13800^2 .

It is a de Polignac number, because none of the positive numbers 2^k-338281281 is a prime.

It is a super-2 number, since 2×338281281² = 228868450150001922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (338281241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1445530 + ... + 1445763.

Almost surely, 2^338281281 is an apocalyptic number.

It is an amenable number.

338281281 is a deficient number, since it is larger than the sum of its proper divisors (187934227).

338281281 is a wasteful number, since it uses less digits than its factorization.

338281281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891312 (or 2891309 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 338281281 is about 18392.4245546910. The cubic root of 338281281 is about 696.7751532658.

The spelling of 338281281 in words is "three hundred thirty-eight million, two hundred eighty-one thousand, two hundred eighty-one".