82143245331 has 24 divisors (see below), whose sum is σ = 136385389920. Its totient is φ = 46667667456.

The previous prime is 82143245311. The next prime is 82143245339. The reversal of 82143245331 is 13354234128.

82143245331 is a `hidden beast` number, since 82 + 1 + 4 + 3 + 245 + 331 = 666.

It is not a de Polignac number, because 82143245331 - 2¹⁰ = 82143244307 is a prime.

It is a super-2 number, since 2×82143245331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82143245339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3757486 + ... + 3779283.

It is an arithmetic number, because the mean of its divisors is an integer number (5682724580).

Almost surely, 2^82143245331 is an apocalyptic number.

82143245331 is a deficient number, since it is larger than the sum of its proper divisors (54242144589).

82143245331 is a wasteful number, since it uses less digits than its factorization.

82143245331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7536955 (or 7536952 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

Adding to 82143245331 its reverse (13354234128), we get a palindrome (95497479459).

The spelling of 82143245331 in words is "eighty-two billion, one hundred forty-three million, two hundred forty-five thousand, three hundred thirty-one".