322381 has 4 divisors (see below), whose sum is σ = 331132. Its totient is φ = 313632.

The previous prime is 322351. The next prime is 322397. The reversal of 322381 is 183223.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 183223 = 43 ⋅4261.

It can be written as a sum of positive squares in 2 ways, for example, as 302500 + 19881 = 550^2 + 141^2 .

It is a cyclic number.

It is not a de Polignac number, because 322381 - 2⁵ = 322349 is a prime.

It is a super-2 number, since 2×322381² = 207859018322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322351) 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 3 ways as a sum of consecutive naturals, for example, 4320 + ... + 4393.

It is an arithmetic number, because the mean of its divisors is an integer number (82783).

2³²²³⁸¹ is an apocalyptic number.

It is an amenable number.

322381 is a deficient number, since it is larger than the sum of its proper divisors (8751).

322381 is an equidigital number, since it uses as much as digits as its factorization.

322381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8750.

The product of its digits is 288, while the sum is 19.

The square root of 322381 is about 567.7860512552. The cubic root of 322381 is about 68.5682627093.

It can be divided in two parts, 322 and 381, that added together give a triangular number (703 = T₃₇).

The spelling of 322381 in words is "three hundred twenty-two thousand, three hundred eighty-one".