171139203 has 16 divisors (see below), whose sum is σ = 253752960. Its totient is φ = 113996808.

The previous prime is 171139193. The next prime is 171139217. The reversal of 171139203 is 302931171.

It is a de Polignac number, because none of the positive numbers 2^k-171139203 is a prime.

It is a super-3 number, since 3×171139203³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (171139223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46476 + ... + 50022.

It is an arithmetic number, because the mean of its divisors is an integer number (15859560).

Almost surely, 2^171139203 is an apocalyptic number.

171139203 is a deficient number, since it is larger than the sum of its proper divisors (82613757).

171139203 is a wasteful number, since it uses less digits than its factorization.

171139203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5343 (or 5337 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 171139203 is about 13082.0183075854. The cubic root of 171139203 is about 555.2004827206.

The spelling of 171139203 in words is "one hundred seventy-one million, one hundred thirty-nine thousand, two hundred three".