343945 has 16 divisors (see below), whose sum is σ = 488448. Its totient is φ = 227520.

The previous prime is 343943. The next prime is 343951. The reversal of 343945 is 549343.

It is not a de Polignac number, because 343945 - 2¹ = 343943 is a prime.

It is a Duffinian number.

Its product of digits (6480) is a multiple of the sum of its prime divisors (360).

It is not an unprimeable number, because it can be changed into a prime (343943) 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 15 ways as a sum of consecutive naturals, for example, 927 + ... + 1243.

It is an arithmetic number, because the mean of its divisors is an integer number (30528).

2³⁴³⁹⁴⁵ is an apocalyptic number.

343945 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

343945 is a deficient number, since it is larger than the sum of its proper divisors (144503).

343945 is a wasteful number, since it uses less digits than its factorization.

343945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360.

The product of its digits is 6480, while the sum is 28.

The square root of 343945 is about 586.4682429595. The cubic root of 343945 is about 70.0642267666.

The spelling of 343945 in words is "three hundred forty-three thousand, nine hundred forty-five".