128131103 has 2 divisors, whose sum is σ = 128131104. Its totient is φ = 128131102.

The previous prime is 128131061. The next prime is 128131121. The reversal of 128131103 is 301131821.

It is a strong prime.

It is an emirp because it is prime and its reverse (301131821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128131103 - 2²⁴ = 111353887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128131603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64065551 + 64065552.

It is an arithmetic number, because the mean of its divisors is an integer number (64065552).

Almost surely, 2^128131103 is an apocalyptic number.

128131103 is a deficient number, since it is larger than the sum of its proper divisors (1).

128131103 is an equidigital number, since it uses as much as digits as its factorization.

128131103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 128131103 is about 11319.5010049030. The cubic root of 128131103 is about 504.1404231526.

Adding to 128131103 its reverse (301131821), we get a palindrome (429262924).

The spelling of 128131103 in words is "one hundred twenty-eight million, one hundred thirty-one thousand, one hundred three".