131908128893 has 2 divisors, whose sum is σ = 131908128894. Its totient is φ = 131908128892.

The previous prime is 131908128839. The next prime is 131908128949. The reversal of 131908128893 is 398821809131.

It is a happy number.

Together with previous prime (131908128839) 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., 72080436484 + 59827692409 = 268478^2 + 244597^2 .

It is a cyclic number.

It is not a de Polignac number, because 131908128893 - 2⁸ = 131908128637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131908128493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65954064446 + 65954064447.

It is an arithmetic number, because the mean of its divisors is an integer number (65954064447).

Almost surely, 2^131908128893 is an apocalyptic number.

It is an amenable number.

131908128893 is a deficient number, since it is larger than the sum of its proper divisors (1).

131908128893 is an equidigital number, since it uses as much as digits as its factorization.

131908128893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 53.

The spelling of 131908128893 in words is "one hundred thirty-one billion, nine hundred eight million, one hundred twenty-eight thousand, eight hundred ninety-three".