319100005 has 12 divisors (see below), whose sum is σ = 445437900. Its totient is φ = 218811264.

The previous prime is 319099997. The next prime is 319100017. The reversal of 319100005 is 500001913.

It can be written as a sum of positive squares in 2 ways, for example, as 220017889 + 99082116 = 14833^2 + 9954^2 .

It is not a de Polignac number, because 319100005 - 2³ = 319099997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 650980 + ... + 651469.

It is an arithmetic number, because the mean of its divisors is an integer number (37119825).

Almost surely, 2^319100005 is an apocalyptic number.

319100005 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

319100005 is a deficient number, since it is larger than the sum of its proper divisors (126337895).

319100005 is a wasteful number, since it uses less digits than its factorization.

319100005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302468 (or 1302461 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 319100005 is about 17863.3704826385. The cubic root of 319100005 is about 683.3485391553.

Adding to 319100005 its reverse (500001913), we get a palindrome (819101918).

The spelling of 319100005 in words is "three hundred nineteen million, one hundred thousand, five".