131680724286157 has 4 divisors (see below), whose sum is σ = 131680850415516. Its totient is φ = 131680598156800.

The previous prime is 131680724286151. The next prime is 131680724286197. The reversal of 131680724286157 is 751682427086131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94374599486281 + 37306124799876 = 9714659^2 + 6107874^2 .

It is a cyclic number.

It is not a de Polignac number, because 131680724286157 - 2³⁹ = 131130968472269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131680724286095 and 131680724286104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131680724286151) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 61485478 + ... + 63591079.

It is an arithmetic number, because the mean of its divisors is an integer number (32920212603879).

Almost surely, 2^{131680724286157} is an apocalyptic number.

It is an amenable number.

131680724286157 is a deficient number, since it is larger than the sum of its proper divisors (126129359).

131680724286157 is a wasteful number, since it uses less digits than its factorization.

131680724286157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126129358.

The product of its (nonzero) digits is 27095040, while the sum is 61.

The spelling of 131680724286157 in words is "one hundred thirty-one trillion, six hundred eighty billion, seven hundred twenty-four million, two hundred eighty-six thousand, one hundred fifty-seven".