171358387 has 2 divisors, whose sum is σ = 171358388. Its totient is φ = 171358386.

The previous prime is 171358379. The next prime is 171358391. The reversal of 171358387 is 783853171.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 171358387 - 2³ = 171358379 is a prime.

It is not a weakly prime, because it can be changed into another prime (171358337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85679193 + 85679194.

It is an arithmetic number, because the mean of its divisors is an integer number (85679194).

Almost surely, 2^171358387 is an apocalyptic number.

171358387 is a deficient number, since it is larger than the sum of its proper divisors (1).

171358387 is an equidigital number, since it uses as much as digits as its factorization.

171358387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 43.

The square root of 171358387 is about 13090.3929276397. The cubic root of 171358387 is about 555.4374032042.

The spelling of 171358387 in words is "one hundred seventy-one million, three hundred fifty-eight thousand, three hundred eighty-seven".