128343017 has 4 divisors (see below), whose sum is σ = 140010576. Its totient is φ = 116675460.

The previous prime is 128343001. The next prime is 128343029. The reversal of 128343017 is 710343821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 710343821 = 11 ⋅64576711.

It is not a de Polignac number, because 128343017 - 2⁴ = 128343001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128343037) 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 in 3 ways as a sum of consecutive naturals, for example, 5833763 + ... + 5833784.

It is an arithmetic number, because the mean of its divisors is an integer number (35002644).

Almost surely, 2^128343017 is an apocalyptic number.

It is an amenable number.

128343017 is a deficient number, since it is larger than the sum of its proper divisors (11667559).

128343017 is a wasteful number, since it uses less digits than its factorization.

128343017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11667558.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 128343017 is about 11328.8577094074. The cubic root of 128343017 is about 504.4182000232.

Adding to 128343017 its reverse (710343821), we get a palindrome (838686838).

It can be divided in two parts, 12834 and 3017, that added together give a palindrome (15851).

The spelling of 128343017 in words is "one hundred twenty-eight million, three hundred forty-three thousand, seventeen".