321338 has 4 divisors (see below), whose sum is σ = 482010. Its totient is φ = 160668.

The previous prime is 321331. The next prime is 321341. The reversal of 321338 is 833123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 833123 = 431 ⋅1933.

It can be written as a sum of positive squares in only one way, i.e., 284089 + 37249 = 533^2 + 193^2 .

It is a super-2 number, since 2×321338² = 206516220488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321331) 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 as a sum of consecutive naturals, namely, 80333 + ... + 80336.

2³²¹³³⁸ is an apocalyptic number.

321338 is a deficient number, since it is larger than the sum of its proper divisors (160672).

321338 is a wasteful number, since it uses less digits than its factorization.

321338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160671.

The product of its digits is 432, while the sum is 20.

The square root of 321338 is about 566.8668273942. The cubic root of 321338 is about 68.4942364661.

The spelling of 321338 in words is "three hundred twenty-one thousand, three hundred thirty-eight".