131000313510205 has 16 divisors (see below), whose sum is σ = 157430019290544. Its totient is φ = 104647209569280.

The previous prime is 131000313510173. The next prime is 131000313510221. The reversal of 131000313510205 is 502015313000131.

It can be written as a sum of positive squares in 8 ways, for example, as 13991504832484 + 117008808677721 = 3740522^2 + 10817061^2 .

It is not a de Polignac number, because 131000313510205 - 2⁵ = 131000313510173 is a prime.

It is a super-2 number, since 2×131000313510205² (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 131000313510205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15989749 + ... + 22752421.

It is an arithmetic number, because the mean of its divisors is an integer number (9839376205659).

Almost surely, 2^{131000313510205} is an apocalyptic number.

It is an amenable number.

131000313510205 is a deficient number, since it is larger than the sum of its proper divisors (26429705780339).

131000313510205 is an equidigital number, since it uses as much as digits as its factorization.

131000313510205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6768336.

The product of its (nonzero) digits is 1350, while the sum is 25.

Adding to 131000313510205 its reverse (502015313000131), we get a palindrome (633015626510336).

The spelling of 131000313510205 in words is "one hundred thirty-one trillion, three hundred thirteen million, five hundred ten thousand, two hundred five".