320281 has 8 divisors (see below), whose sum is σ = 350784. Its totient is φ = 290640.

The previous prime is 320273. The next prime is 320291. The reversal of 320281 is 182023.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320281 - 2³ = 320273 is a prime.

It is a super-2 number, since 2×320281² = 205159837922, which contains 22 as substring.

It is a Duffinian number.

320281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (320291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 750 + ... + 1096.

It is an arithmetic number, because the mean of its divisors is an integer number (43848).

2³²⁰²⁸¹ is an apocalyptic number.

It is an amenable number.

320281 is a deficient number, since it is larger than the sum of its proper divisors (30503).

320281 is a wasteful number, since it uses less digits than its factorization.

320281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 320281 is about 565.9337417048. The cubic root of 320281 is about 68.4190529780.

The spelling of 320281 in words is "three hundred twenty thousand, two hundred eighty-one".