343885 has 4 divisors (see below), whose sum is σ = 412668. Its totient is φ = 275104.

The previous prime is 343831. The next prime is 343891. The reversal of 343885 is 588343.

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

It can be written as a sum of positive squares in 2 ways, for example, as 181476 + 162409 = 426^2 + 403^2 .

It is a cyclic number.

It is not a de Polignac number, because 343885 - 2⁹ = 343373 is a prime.

It is a d-powerful number, because it can be written as 3⁷ + 4⁷ + 8⁴ + 3¹⁰ + 8⁶ + 5² .

It is a Duffinian number.

343885 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34384 + ... + 34393.

It is an arithmetic number, because the mean of its divisors is an integer number (103167).

2³⁴³⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

343885 is a deficient number, since it is larger than the sum of its proper divisors (68783).

343885 is an equidigital number, since it uses as much as digits as its factorization.

343885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68782.

The product of its digits is 11520, while the sum is 31.

The square root of 343885 is about 586.4170870635. The cubic root of 343885 is about 70.0601523767.

It can be divided in two parts, 3438 and 85, that multiplied together give a triangular number (292230 = T₇₆₄).

The spelling of 343885 in words is "three hundred forty-three thousand, eight hundred eighty-five".