127317189 has 16 divisors (see below), whose sum is σ = 171906560. Its totient is φ = 83810160.

The previous prime is 127317173. The next prime is 127317191. The reversal of 127317189 is 981713721.

It is not a de Polignac number, because 127317189 - 2⁴ = 127317173 is a prime.

It is a super-2 number, since 2×127317189² = 32419333229723442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (127317139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87264 + ... + 88710.

It is an arithmetic number, because the mean of its divisors is an integer number (10744160).

Almost surely, 2^127317189 is an apocalyptic number.

It is an amenable number.

127317189 is a deficient number, since it is larger than the sum of its proper divisors (44589371).

127317189 is a wasteful number, since it uses less digits than its factorization.

127317189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800.

The product of its digits is 21168, while the sum is 39.

The square root of 127317189 is about 11283.4918797330. The cubic root of 127317189 is about 503.0706884727.

The spelling of 127317189 in words is "one hundred twenty-seven million, three hundred seventeen thousand, one hundred eighty-nine".