71128103 has 2 divisors, whose sum is σ = 71128104. Its totient is φ = 71128102.

The previous prime is 71128093. The next prime is 71128111. The reversal of 71128103 is 30182117.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71128103 - 2¹⁰ = 71127079 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71128193) 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, 35564051 + 35564052.

It is an arithmetic number, because the mean of its divisors is an integer number (35564052).

Almost surely, 2^71128103 is an apocalyptic number.

71128103 is a deficient number, since it is larger than the sum of its proper divisors (1).

71128103 is an equidigital number, since it uses as much as digits as its factorization.

71128103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 71128103 is about 8433.7478620125. The cubic root of 71128103 is about 414.3306634260.

The spelling of 71128103 in words is "seventy-one million, one hundred twenty-eight thousand, one hundred three".