116131909 has 2 divisors, whose sum is σ = 116131910. Its totient is φ = 116131908.

The previous prime is 116131793. The next prime is 116131969. The reversal of 116131909 is 909131611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98069409 + 18062500 = 9903^2 + 4250^2 .

It is a cyclic number.

It is not a de Polignac number, because 116131909 - 2⁹ = 116131397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116131969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58065954 + 58065955.

It is an arithmetic number, because the mean of its divisors is an integer number (58065955).

Almost surely, 2^116131909 is an apocalyptic number.

It is an amenable number.

116131909 is a deficient number, since it is larger than the sum of its proper divisors (1).

116131909 is an equidigital number, since it uses as much as digits as its factorization.

116131909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 116131909 is about 10776.4515959568. The cubic root of 116131909 is about 487.8846881648.

The spelling of 116131909 in words is "one hundred sixteen million, one hundred thirty-one thousand, nine hundred nine".