343819 has 4 divisors (see below), whose sum is σ = 392944. Its totient is φ = 294696.

The previous prime is 343817. The next prime is 343823. The reversal of 343819 is 918343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 918343 = 29 ⋅31667.

It is a cyclic number.

It is not a de Polignac number, because 343819 - 2¹ = 343817 is a prime.

It is a super-2 number, since 2×343819² = 236423009522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (343813) 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 3 ways as a sum of consecutive naturals, for example, 24552 + ... + 24565.

It is an arithmetic number, because the mean of its divisors is an integer number (98236).

2³⁴³⁸¹⁹ is an apocalyptic number.

343819 is a deficient number, since it is larger than the sum of its proper divisors (49125).

343819 is an equidigital number, since it uses as much as digits as its factorization.

343819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49124.

The product of its digits is 2592, while the sum is 28.

The square root of 343819 is about 586.3608104231. The cubic root of 343819 is about 70.0556700004.

The spelling of 343819 in words is "three hundred forty-three thousand, eight hundred nineteen".