131040102509 has 2 divisors, whose sum is σ = 131040102510. Its totient is φ = 131040102508.

The previous prime is 131040102499. The next prime is 131040102517. The reversal of 131040102509 is 905201040131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115602040009 + 15438062500 = 340003^2 + 124250^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131040102509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131040104509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65520051254 + 65520051255.

It is an arithmetic number, because the mean of its divisors is an integer number (65520051255).

Almost surely, 2^131040102509 is an apocalyptic number.

It is an amenable number.

131040102509 is a deficient number, since it is larger than the sum of its proper divisors (1).

131040102509 is an equidigital number, since it uses as much as digits as its factorization.

131040102509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The spelling of 131040102509 in words is "one hundred thirty-one billion, forty million, one hundred two thousand, five hundred nine".