340091 has 4 divisors (see below), whose sum is σ = 342000. Its totient is φ = 338184.

The previous prime is 340079. The next prime is 340103. The reversal of 340091 is 190043.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (340079) and next prime (340103).

It is a cyclic number.

It is not a de Polignac number, because 340091 - 2⁶ = 340027 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 340091.

It is not an unprimeable number, because it can be changed into a prime (340031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 656 + ... + 1053.

It is an arithmetic number, because the mean of its divisors is an integer number (85500).

2³⁴⁰⁰⁹¹ is an apocalyptic number.

340091 is a deficient number, since it is larger than the sum of its proper divisors (1909).

340091 is a wasteful number, since it uses less digits than its factorization.

340091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 340091 is about 583.1732161202. The cubic root of 340091 is about 69.8015467511.

The spelling of 340091 in words is "three hundred forty thousand, ninety-one".