131657333206681 has 8 divisors (see below), whose sum is σ = 134721209123424. Its totient is φ = 128593551720480.

The previous prime is 131657333206639. The next prime is 131657333206687. The reversal of 131657333206681 is 186602333756131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131657333206681 - 2²³ = 131657324818073 is a prime.

It is a super-2 number, since 2×131657333206681² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131657333206687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20782855 + ... + 26367436.

It is an arithmetic number, because the mean of its divisors is an integer number (16840151140428).

Almost surely, 2^{131657333206681} is an apocalyptic number.

It is an amenable number.

131657333206681 is a deficient number, since it is larger than the sum of its proper divisors (3063875916743).

131657333206681 is an equidigital number, since it uses as much as digits as its factorization.

131657333206681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47215271.

The product of its (nonzero) digits is 9797760, while the sum is 55.

The spelling of 131657333206681 in words is "one hundred thirty-one trillion, six hundred fifty-seven billion, three hundred thirty-three million, two hundred six thousand, six hundred eighty-one".