131331451520205 has 12 divisors (see below), whose sum is σ = 227641182635100. Its totient is φ = 70043440810752.

The previous prime is 131331451520201. The next prime is 131331451520207. The reversal of 131331451520205 is 502025154133131.

It is a happy number.

131331451520205 is a `hidden beast` number, since 1 + 3 + 133 + 1 + 4 + 515 + 2 + 0 + 2 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16274035423881 + 115057416096324 = 4034109^2 + 10726482^2 .

It is not a de Polignac number, because 131331451520205 - 2² = 131331451520201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131331451520205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131331451520201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1459238350180 + ... + 1459238350269.

It is an arithmetic number, because the mean of its divisors is an integer number (18970098552925).

Almost surely, 2^{131331451520205} is an apocalyptic number.

131331451520205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131331451520205 is a deficient number, since it is larger than the sum of its proper divisors (96309731114895).

131331451520205 is a wasteful number, since it uses less digits than its factorization.

131331451520205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2918476700460 (or 2918476700457 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The spelling of 131331451520205 in words is "one hundred thirty-one trillion, three hundred thirty-one billion, four hundred fifty-one million, five hundred twenty thousand, two hundred five".