340191 has 6 divisors (see below), whose sum is σ = 491400. Its totient is φ = 226788.

The previous prime is 340183. The next prime is 340201. The reversal of 340191 is 191043.

It is not a de Polignac number, because 340191 - 2³ = 340183 is a prime.

340191 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340111) 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 5 ways as a sum of consecutive naturals, for example, 18891 + ... + 18908.

It is an arithmetic number, because the mean of its divisors is an integer number (81900).

2³⁴⁰¹⁹¹ is an apocalyptic number.

340191 is a deficient number, since it is larger than the sum of its proper divisors (151209).

340191 is a wasteful number, since it uses less digits than its factorization.

340191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37805 (or 37802 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 340191 is about 583.2589476382. The cubic root of 340191 is about 69.8083875384.

The spelling of 340191 in words is "three hundred forty thousand, one hundred ninety-one".