82131297 has 8 divisors (see below), whose sum is σ = 109808256. Its totient is φ = 54604272.

The previous prime is 82131227. The next prime is 82131311. The reversal of 82131297 is 79213128.

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

It is not a de Polignac number, because 82131297 - 2⁸ = 82131041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82131227) 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, 36198 + ... + 38399.

It is an arithmetic number, because the mean of its divisors is an integer number (13726032).

Almost surely, 2^82131297 is an apocalyptic number.

It is an amenable number.

82131297 is a deficient number, since it is larger than the sum of its proper divisors (27676959).

82131297 is a wasteful number, since it uses less digits than its factorization.

82131297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74967.

The product of its digits is 6048, while the sum is 33.

The square root of 82131297 is about 9062.6319024884. The cubic root of 82131297 is about 434.6799019137.

It can be divided in two parts, 82131 and 297, that added together give a palindrome (82428).

The spelling of 82131297 in words is "eighty-two million, one hundred thirty-one thousand, two hundred ninety-seven".