131551939781117 has 8 divisors (see below), whose sum is σ = 131646712860000. Its totient is φ = 131457183394384.

The previous prime is 131551939781107. The next prime is 131551939781161. The reversal of 131551939781117 is 711187939155131.

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 131551939781117 - 2³⁰ = 131550866039293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131551939781117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131551939781107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11616278 + ... + 19950984.

It is an arithmetic number, because the mean of its divisors is an integer number (16455839107500).

Almost surely, 2^{131551939781117} is an apocalyptic number.

It is an amenable number.

131551939781117 is a deficient number, since it is larger than the sum of its proper divisors (94773078883).

131551939781117 is an equidigital number, since it uses as much as digits as its factorization.

131551939781117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8346075.

The product of its digits is 7144200, while the sum is 62.

The spelling of 131551939781117 in words is "one hundred thirty-one trillion, five hundred fifty-one billion, nine hundred thirty-nine million, seven hundred eighty-one thousand, one hundred seventeen".