131898042709 has 2 divisors, whose sum is σ = 131898042710. Its totient is φ = 131898042708.

The previous prime is 131898042697. The next prime is 131898042721. The reversal of 131898042709 is 907240898131.

It is a balanced prime because it is at equal distance from previous prime (131898042697) and next prime (131898042721).

It can be written as a sum of positive squares in only one way, i.e., 126433580625 + 5464462084 = 355575^2 + 73922^2 .

It is an emirp because it is prime and its reverse (907240898131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131898042709 - 2¹¹ = 131898040661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131898042739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65949021354 + 65949021355.

It is an arithmetic number, because the mean of its divisors is an integer number (65949021355).

Almost surely, 2^131898042709 is an apocalyptic number.

It is an amenable number.

131898042709 is a deficient number, since it is larger than the sum of its proper divisors (1).

131898042709 is an equidigital number, since it uses as much as digits as its factorization.

131898042709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 52.

The spelling of 131898042709 in words is "one hundred thirty-one billion, eight hundred ninety-eight million, forty-two thousand, seven hundred nine".