81283 has 2 divisors, whose sum is σ = 81284. Its totient is φ = 81282.

The previous prime is 81281. The next prime is 81293. The reversal of 81283 is 38218.

It is a weak prime.

81283 is a truncatable prime.

It is a cyclic number.

It is not a de Polignac number, because 81283 - 2¹ = 81281 is a prime.

Together with 81281, it forms a pair of twin primes.

It is a plaindrome in base 9.

It is not a weakly prime, because it can be changed into another prime (81281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40641 + 40642.

It is an arithmetic number, because the mean of its divisors is an integer number (40642).

2⁸¹²⁸³ is an apocalyptic number.

81283 is a deficient number, since it is larger than the sum of its proper divisors (1).

81283 is an equidigital number, since it uses as much as digits as its factorization.

81283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 22.

The square root of 81283 is about 285.1017362276. The cubic root of 81283 is about 43.3178182458.

The spelling of 81283 in words is "eighty-one thousand, two hundred eighty-three".