82871311 has 8 divisors (see below), whose sum is σ = 87937920. Its totient is φ = 77826048.

The previous prime is 82871309. The next prime is 82871317. The reversal of 82871311 is 11317828.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82871311 - 2¹ = 82871309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82871317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3055 + ... + 13231.

It is an arithmetic number, because the mean of its divisors is an integer number (10992240).

Almost surely, 2^82871311 is an apocalyptic number.

82871311 is a deficient number, since it is larger than the sum of its proper divisors (5066609).

82871311 is a wasteful number, since it uses less digits than its factorization.

82871311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10673.

The product of its digits is 2688, while the sum is 31.

The square root of 82871311 is about 9103.3681129569. The cubic root of 82871311 is about 435.9815085584.

The spelling of 82871311 in words is "eighty-two million, eight hundred seventy-one thousand, three hundred eleven".