93281 has 2 divisors, whose sum is σ = 93282. Its totient is φ = 93280.

The previous prime is 93263. The next prime is 93283. The reversal of 93281 is 18239.

93281 is nontrivially palindromic in base 16.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93025 + 256 = 305^2 + 16^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-93281 is a prime.

It is a super-2 number, since 2×93281² = 17402689922, which contains 22 as substring.

Together with 93283, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 93281.

It is not a weakly prime, because it can be changed into another prime (93283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46640 + 46641.

It is an arithmetic number, because the mean of its divisors is an integer number (46641).

2⁹³²⁸¹ is an apocalyptic number.

It is an amenable number.

93281 is a deficient number, since it is larger than the sum of its proper divisors (1).

93281 is an equidigital number, since it uses as much as digits as its factorization.

93281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 23.

The square root of 93281 is about 305.4193837987. The cubic root of 93281 is about 45.3521344065.

The spelling of 93281 in words is "ninety-three thousand, two hundred eighty-one".