83181704051831 has 32 divisors (see below), whose sum is σ = 108315206760960. Its totient is φ = 61996203619200.

The previous prime is 83181704051813. The next prime is 83181704051909. The reversal of 83181704051831 is 13815040718138.

It is a cyclic number.

It is not a de Polignac number, because 83181704051831 - 2¹⁸ = 83181703789687 is a prime.

It is a super-2 number, since 2×83181704051831² (a number of 29 digits) contains 22 as substring.

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 83181704051831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83181704051531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247262480 + ... + 247598661.

It is an arithmetic number, because the mean of its divisors is an integer number (3384850211280).

Almost surely, 2^{83181704051831} is an apocalyptic number.

83181704051831 is a deficient number, since it is larger than the sum of its proper divisors (25133502709129).

83181704051831 is a wasteful number, since it uses less digits than its factorization.

83181704051831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494861255.

The product of its (nonzero) digits is 645120, while the sum is 50.

Adding to 83181704051831 its reverse (13815040718138), we get a palindrome (96996744769969).

The spelling of 83181704051831 in words is "eighty-three trillion, one hundred eighty-one billion, seven hundred four million, fifty-one thousand, eight hundred thirty-one".