131115234440205 has 48 divisors (see below), whose sum is σ = 230663624016384. Its totient is φ = 68882874192000.

The previous prime is 131115234440171. The next prime is 131115234440219. The reversal of 131115234440205 is 502044432511131.

131115234440205 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 1 + 5 + 2 + 3 + 4 + 440 + 205 = 666.

It is not a de Polignac number, because 131115234440205 - 2²⁰ = 131115233391629 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131115234440205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140489167 + ... + 141419363.

It is an arithmetic number, because the mean of its divisors is an integer number (4805492167008).

Almost surely, 2^{131115234440205} is an apocalyptic number.

131115234440205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131115234440205 is a deficient number, since it is larger than the sum of its proper divisors (99548389576179).

131115234440205 is a wasteful number, since it uses less digits than its factorization.

131115234440205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977026 (or 977023 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 131115234440205 its reverse (502044432511131), we get a palindrome (633159666951336).

The spelling of 131115234440205 in words is "one hundred thirty-one trillion, one hundred fifteen billion, two hundred thirty-four million, four hundred forty thousand, two hundred five".