131556237211 has 12 divisors (see below), whose sum is σ = 153927826032. Its totient is φ = 110140094736.

The previous prime is 131556237187. The next prime is 131556237221. The reversal of 131556237211 is 112732655131.

It is not a de Polignac number, because 131556237211 - 2¹⁷ = 131556106139 is a prime.

It is a super-5 number, since 5×131556237211⁵ (a number of 57 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131556237221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5069196 + ... + 5095081.

It is an arithmetic number, because the mean of its divisors is an integer number (12827318836).

Almost surely, 2^131556237211 is an apocalyptic number.

131556237211 is a deficient number, since it is larger than the sum of its proper divisors (22371588821).

131556237211 is an equidigital number, since it uses as much as digits as its factorization.

131556237211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10164370 (or 10164327 counting only the distinct ones).

The product of its digits is 37800, while the sum is 37.

The spelling of 131556237211 in words is "one hundred thirty-one billion, five hundred fifty-six million, two hundred thirty-seven thousand, two hundred eleven".