131115312115505 has 32 divisors (see below), whose sum is σ = 158307835650048. Its totient is φ = 104247037440000.

The previous prime is 131115312115483. The next prime is 131115312115549. The reversal of 131115312115505 is 505511213511131.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-131115312115505 is a prime.

It is a super-2 number, since 2×131115312115505² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9228916112 + ... + 9228930318.

It is an arithmetic number, because the mean of its divisors is an integer number (4947119864064).

Almost surely, 2^{131115312115505} is an apocalyptic number.

It is an amenable number.

131115312115505 is a deficient number, since it is larger than the sum of its proper divisors (27192523534543).

131115312115505 is a wasteful number, since it uses less digits than its factorization.

131115312115505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23057.

The product of its (nonzero) digits is 11250, while the sum is 35.

Adding to 131115312115505 its reverse (505511213511131), we get a palindrome (636626525626636).

The spelling of 131115312115505 in words is "one hundred thirty-one trillion, one hundred fifteen billion, three hundred twelve million, one hundred fifteen thousand, five hundred five".