981271 has 2 divisors, whose sum is σ = 981272. Its totient is φ = 981270.

The previous prime is 981263. The next prime is 981283. The reversal of 981271 is 172189.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 981271 - 2³ = 981263 is a prime.

981271 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490635 + 490636.

It is an arithmetic number, because the mean of its divisors is an integer number (490636).

2⁹⁸¹²⁷¹ is an apocalyptic number.

981271 is a deficient number, since it is larger than the sum of its proper divisors (1).

981271 is an equidigital number, since it uses as much as digits as its factorization.

981271 is an odious number, because the sum of its binary digits is odd.

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

The square root of 981271 is about 990.5912375950. The cubic root of 981271 is about 99.3717614282.

It can be divided in two parts, 98 and 1271, that added together give a square (1369 = 37²).

The spelling of 981271 in words is "nine hundred eighty-one thousand, two hundred seventy-one".