171380239 has 2 divisors, whose sum is σ = 171380240. Its totient is φ = 171380238.

The previous prime is 171380221. The next prime is 171380257. The reversal of 171380239 is 932083171.

171380239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (171380221) and next prime (171380257).

It is a cyclic number.

It is not a de Polignac number, because 171380239 - 2⁹ = 171379727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171380299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85690119 + 85690120.

It is an arithmetic number, because the mean of its divisors is an integer number (85690120).

Almost surely, 2^171380239 is an apocalyptic number.

171380239 is a deficient number, since it is larger than the sum of its proper divisors (1).

171380239 is an equidigital number, since it uses as much as digits as its factorization.

171380239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 171380239 is about 13091.2275589419. The cubic root of 171380239 is about 555.4610124021.

The spelling of 171380239 in words is "one hundred seventy-one million, three hundred eighty thousand, two hundred thirty-nine".