281971 has 2 divisors, whose sum is σ = 281972. Its totient is φ = 281970.

The previous prime is 281959. The next prime is 281989. The reversal of 281971 is 179182.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-281971 is a prime.

It is not a weakly prime, because it can be changed into another prime (281921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140985 + 140986.

It is an arithmetic number, because the mean of its divisors is an integer number (140986).

2²⁸¹⁹⁷¹ is an apocalyptic number.

281971 is a deficient number, since it is larger than the sum of its proper divisors (1).

281971 is an equidigital number, since it uses as much as digits as its factorization.

281971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 28.

The square root of 281971 is about 531.0094161124. The cubic root of 281971 is about 65.5744738828.

The spelling of 281971 in words is "two hundred eighty-one thousand, nine hundred seventy-one".