131340109 has 2 divisors, whose sum is σ = 131340110. Its totient is φ = 131340108.

The previous prime is 131340091. The next prime is 131340151. The reversal of 131340109 is 901043131.

Together with previous prime (131340091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82410084 + 48930025 = 9078^2 + 6995^2 .

It is a cyclic number.

It is not a de Polignac number, because 131340109 - 2⁷ = 131339981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131340109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131340169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65670054 + 65670055.

It is an arithmetic number, because the mean of its divisors is an integer number (65670055).

Almost surely, 2^131340109 is an apocalyptic number.

It is an amenable number.

131340109 is a deficient number, since it is larger than the sum of its proper divisors (1).

131340109 is an equidigital number, since it uses as much as digits as its factorization.

131340109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 131340109 is about 11460.3712418054. The cubic root of 131340109 is about 508.3144520683.

The spelling of 131340109 in words is "one hundred thirty-one million, three hundred forty thousand, one hundred nine".