82716131 has 2 divisors, whose sum is σ = 82716132. Its totient is φ = 82716130.

The previous prime is 82716121. The next prime is 82716157. The reversal of 82716131 is 13161728.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82716131 is a prime.

It is a super-2 number, since 2×82716131² = 13683916655218322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 82716094 and 82716103.

It is not a weakly prime, because it can be changed into another prime (82716121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41358065 + 41358066.

It is an arithmetic number, because the mean of its divisors is an integer number (41358066).

Almost surely, 2^82716131 is an apocalyptic number.

82716131 is a deficient number, since it is larger than the sum of its proper divisors (1).

82716131 is an equidigital number, since it uses as much as digits as its factorization.

82716131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 29.

The square root of 82716131 is about 9094.8409002027. The cubic root of 82716131 is about 435.7092073121.

Adding to 82716131 its reverse (13161728), we get a palindrome (95877859).

The spelling of 82716131 in words is "eighty-two million, seven hundred sixteen thousand, one hundred thirty-one".