82718031 has 16 divisors (see below), whose sum is σ = 120591360. Its totient is φ = 50017920.

The previous prime is 82718023. The next prime is 82718057. The reversal of 82718031 is 13081728.

It is a happy number.

It is not a de Polignac number, because 82718031 - 2³ = 82718023 is a prime.

It is a super-2 number, since 2×82718031² = 13684545305033922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82718031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82718231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13191 + ... + 18423.

It is an arithmetic number, because the mean of its divisors is an integer number (7536960).

Almost surely, 2^82718031 is an apocalyptic number.

82718031 is a deficient number, since it is larger than the sum of its proper divisors (37873329).

82718031 is a wasteful number, since it uses less digits than its factorization.

82718031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5726.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 82718031 is about 9094.9453544263. The cubic root of 82718031 is about 435.7125433851.

Adding to 82718031 its reverse (13081728), we get a palindrome (95799759).

The spelling of 82718031 in words is "eighty-two million, seven hundred eighteen thousand, thirty-one".