340819 has 2 divisors, whose sum is σ = 340820. Its totient is φ = 340818.

The previous prime is 340811. The next prime is 340849. The reversal of 340819 is 918043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340819 - 2³ = 340811 is a prime.

It is a super-2 number, since 2×340819² = 232315181522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 340793 and 340802.

It is not a weakly prime, because it can be changed into another prime (340811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170409 + 170410.

It is an arithmetic number, because the mean of its divisors is an integer number (170410).

2³⁴⁰⁸¹⁹ is an apocalyptic number.

340819 is a deficient number, since it is larger than the sum of its proper divisors (1).

340819 is an equidigital number, since it uses as much as digits as its factorization.

340819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 340819 is about 583.7970537781. The cubic root of 340819 is about 69.8513170679.

The spelling of 340819 in words is "three hundred forty thousand, eight hundred nineteen".