128161703 has 8 divisors (see below), whose sum is σ = 129613440. Its totient is φ = 126718200.

The previous prime is 128161697. The next prime is 128161723. The reversal of 128161703 is 307161821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128161703 - 2¹⁰ = 128160679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128161723) 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 7 ways as a sum of consecutive naturals, for example, 32408 + ... + 36146.

It is an arithmetic number, because the mean of its divisors is an integer number (16201680).

Almost surely, 2^128161703 is an apocalyptic number.

128161703 is a deficient number, since it is larger than the sum of its proper divisors (1451737).

128161703 is a wasteful number, since it uses less digits than its factorization.

128161703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4117.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 128161703 is about 11320.8525739010. The cubic root of 128161703 is about 504.1805525427.

The spelling of 128161703 in words is "one hundred twenty-eight million, one hundred sixty-one thousand, seven hundred three".