210131320005 has 24 divisors (see below), whose sum is σ = 374071614072. Its totient is φ = 109041116544.

The previous prime is 210131319997. The next prime is 210131320043. The reversal of 210131320005 is 500023131012.

210131320005 is a `hidden beast` number, since 210 + 131 + 320 + 0 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5590403361 + 204540916644 = 74769^2 + 452262^2 .

It is not a de Polignac number, because 210131320005 - 2³ = 210131319997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210131320005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63100834 + ... + 63104163.

It is an arithmetic number, because the mean of its divisors is an integer number (15586317253).

Almost surely, 2^210131320005 is an apocalyptic number.

It is an amenable number.

210131320005 is a deficient number, since it is larger than the sum of its proper divisors (163940294067).

210131320005 is a wasteful number, since it uses less digits than its factorization.

210131320005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126205045 (or 126205042 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

Adding to 210131320005 its reverse (500023131012), we get a palindrome (710154451017).

The spelling of 210131320005 in words is "two hundred ten billion, one hundred thirty-one million, three hundred twenty thousand, five".