340019 has 4 divisors (see below), whose sum is σ = 344880. Its totient is φ = 335160.

The previous prime is 340007. The next prime is 340027. The reversal of 340019 is 910043.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340019 is a prime.

It is a super-2 number, since 2×340019² = 231225840722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 339979 and 340006.

It is not an unprimeable number, because it can be changed into a prime (340049) 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, 2324 + ... + 2465.

It is an arithmetic number, because the mean of its divisors is an integer number (86220).

2³⁴⁰⁰¹⁹ is an apocalyptic number.

340019 is a deficient number, since it is larger than the sum of its proper divisors (4861).

340019 is an equidigital number, since it uses as much as digits as its factorization.

340019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4860.

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

The square root of 340019 is about 583.1114816225. Note that the first 3 decimals coincide. The cubic root of 340019 is about 69.7966205538.

The spelling of 340019 in words is "three hundred forty thousand, nineteen".