32281 has 4 divisors (see below), whose sum is σ = 34000. Its totient is φ = 30564.

The previous prime is 32261. The next prime is 32297. The reversal of 32281 is 18223.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 32281 - 2⁹ = 31769 is a prime.

It is a super-3 number, since 3×32281³ = 100916503332123, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (32251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831 + ... + 868.

It is an arithmetic number, because the mean of its divisors is an integer number (8500).

2³²²⁸¹ is an apocalyptic number.

It is an amenable number.

32281 is a deficient number, since it is larger than the sum of its proper divisors (1719).

32281 is a wasteful number, since it uses less digits than its factorization.

32281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718.

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

The square root of 32281 is about 179.6691403664. The cubic root of 32281 is about 31.8406794507.

It can be divided in two parts, 32 and 281, that added together give a palindrome (313).

The spelling of 32281 in words is "thirty-two thousand, two hundred eighty-one".