131245830109 has 2 divisors, whose sum is σ = 131245830110. Its totient is φ = 131245830108.

The previous prime is 131245830103. The next prime is 131245830173. The reversal of 131245830109 is 901038542131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126435714084 + 4810116025 = 355578^2 + 69355^2 .

It is a cyclic number.

It is not a de Polignac number, because 131245830109 - 2⁵ = 131245830077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131245830103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65622915054 + 65622915055.

It is an arithmetic number, because the mean of its divisors is an integer number (65622915055).

Almost surely, 2^131245830109 is an apocalyptic number.

It is an amenable number.

131245830109 is a deficient number, since it is larger than the sum of its proper divisors (1).

131245830109 is an equidigital number, since it uses as much as digits as its factorization.

131245830109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 131245830109 in words is "one hundred thirty-one billion, two hundred forty-five million, eight hundred thirty thousand, one hundred nine".