82031111 has 8 divisors (see below), whose sum is σ = 85641600. Its totient is φ = 78472800.

The previous prime is 82031083. The next prime is 82031123. The reversal of 82031111 is 11113028.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82031111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82031111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82031161) 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 in 7 ways as a sum of consecutive naturals, for example, 9815 + ... + 16136.

It is an arithmetic number, because the mean of its divisors is an integer number (10705200).

Almost surely, 2^82031111 is an apocalyptic number.

82031111 is a deficient number, since it is larger than the sum of its proper divisors (3610489).

82031111 is a wasteful number, since it uses less digits than its factorization.

82031111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26089.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 82031111 is about 9057.1027928361. The cubic root of 82031111 is about 434.5030851922.

Adding to 82031111 its reverse (11113028), we get a palindrome (93144139).

The spelling of 82031111 in words is "eighty-two million, thirty-one thousand, one hundred eleven".