171334091 has 2 divisors, whose sum is σ = 171334092. Its totient is φ = 171334090.

The previous prime is 171334063. The next prime is 171334099. The reversal of 171334091 is 190433171.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (190433171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171334091 - 2¹⁸ = 171071947 is a prime.

It is not a weakly prime, because it can be changed into another prime (171334099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85667045 + 85667046.

It is an arithmetic number, because the mean of its divisors is an integer number (85667046).

Almost surely, 2^171334091 is an apocalyptic number.

171334091 is a deficient number, since it is larger than the sum of its proper divisors (1).

171334091 is an equidigital number, since it uses as much as digits as its factorization.

171334091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 171334091 is about 13089.4648859302. The cubic root of 171334091 is about 555.4111511189.

The spelling of 171334091 in words is "one hundred seventy-one million, three hundred thirty-four thousand, ninety-one".