131685610083731 has 4 divisors (see below), whose sum is σ = 143657029182264. Its totient is φ = 119714190985200.

The previous prime is 131685610083697. The next prime is 131685610083749. The reversal of 131685610083731 is 137380016586131.

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

It is a cyclic number.

It is not a de Polignac number, because 131685610083731 - 2⁶ = 131685610083667 is a prime.

It is a super-2 number, since 2×131685610083731² (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 (131685610083031) 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 3 ways as a sum of consecutive naturals, for example, 5985709549250 + ... + 5985709549271.

It is an arithmetic number, because the mean of its divisors is an integer number (35914257295566).

Almost surely, 2^{131685610083731} is an apocalyptic number.

131685610083731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131685610083731 is a deficient number, since it is larger than the sum of its proper divisors (11971419098533).

131685610083731 is a wasteful number, since it uses less digits than its factorization.

131685610083731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11971419098532.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 131685610083731 in words is "one hundred thirty-one trillion, six hundred eighty-five billion, six hundred ten million, eighty-three thousand, seven hundred thirty-one".