319800081 has 16 divisors (see below), whose sum is σ = 441590400. Its totient is φ = 205621248.

The previous prime is 319800067. The next prime is 319800109. The reversal of 319800081 is 180008913.

It is not a de Polignac number, because 319800081 - 2⁵ = 319800049 is a prime.

It is a super-2 number, since 2×319800081² = 204544183615213122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (319800281) 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 15 ways as a sum of consecutive naturals, for example, 117585 + ... + 120273.

It is an arithmetic number, because the mean of its divisors is an integer number (27599400).

Almost surely, 2^319800081 is an apocalyptic number.

It is an amenable number.

319800081 is a deficient number, since it is larger than the sum of its proper divisors (121790319).

319800081 is a wasteful number, since it uses less digits than its factorization.

319800081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4088.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 319800081 is about 17882.9550410440. The cubic root of 319800081 is about 683.8479087135.

Adding to 319800081 its reverse (180008913), we get a palindrome (499808994).

The spelling of 319800081 in words is "three hundred nineteen million, eight hundred thousand, eighty-one".