131109785459 has 2 divisors, whose sum is σ = 131109785460. Its totient is φ = 131109785458.

The previous prime is 131109785447. The next prime is 131109785509. The reversal of 131109785459 is 954587901131.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131109785459 is a prime.

It is a super-3 number, since 3×131109785459³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131109785459.

It is not a weakly prime, because it can be changed into another prime (131109755459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65554892729 + 65554892730.

It is an arithmetic number, because the mean of its divisors is an integer number (65554892730).

Almost surely, 2^131109785459 is an apocalyptic number.

131109785459 is a deficient number, since it is larger than the sum of its proper divisors (1).

131109785459 is an equidigital number, since it uses as much as digits as its factorization.

131109785459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 53.

The spelling of 131109785459 in words is "one hundred thirty-one billion, one hundred nine million, seven hundred eighty-five thousand, four hundred fifty-nine".