131551939781107 has 2 divisors, whose sum is σ = 131551939781108. Its totient is φ = 131551939781106.

The previous prime is 131551939781083. The next prime is 131551939781161. The reversal of 131551939781107 is 701187939155131.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (701187939155131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131551939781107 is a prime.

It is not a weakly prime, because it can be changed into another prime (131551931781107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65775969890553 + 65775969890554.

It is an arithmetic number, because the mean of its divisors is an integer number (65775969890554).

Almost surely, 2^{131551939781107} is an apocalyptic number.

131551939781107 is a deficient number, since it is larger than the sum of its proper divisors (1).

131551939781107 is an equidigital number, since it uses as much as digits as its factorization.

131551939781107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7144200, while the sum is 61.

The spelling of 131551939781107 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 seven".