131109786297 has 20 divisors (see below), whose sum is σ = 223834697856. Its totient is φ = 74919877560.

The previous prime is 131109786289. The next prime is 131109786323. The reversal of 131109786297 is 792687901131.

It is a happy number.

131109786297 is a `hidden beast` number, since 1 + 3 + 1 + 1 + 0 + 9 + 7 + 8 + 629 + 7 = 666.

It is not a de Polignac number, because 131109786297 - 2³ = 131109786289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131109786697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 115616529 + ... + 115617662.

Almost surely, 2^131109786297 is an apocalyptic number.

It is an amenable number.

131109786297 is a deficient number, since it is larger than the sum of its proper divisors (92724911559).

131109786297 is an equidigital number, since it uses as much as digits as its factorization.

131109786297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231234210 (or 231234201 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The spelling of 131109786297 in words is "one hundred thirty-one billion, one hundred nine million, seven hundred eighty-six thousand, two hundred ninety-seven".