343641 has 4 divisors (see below), whose sum is σ = 458192. Its totient is φ = 229092.

The previous prime is 343639. The next prime is 343649. The reversal of 343641 is 146343.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 146343 = 3 ⋅48781.

It is not a de Polignac number, because 343641 - 2¹ = 343639 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343641.

It is not an unprimeable number, because it can be changed into a prime (343649) 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, 57271 + ... + 57276.

It is an arithmetic number, because the mean of its divisors is an integer number (114548).

2³⁴³⁶⁴¹ is an apocalyptic number.

It is an amenable number.

343641 is a deficient number, since it is larger than the sum of its proper divisors (114551).

343641 is a wasteful number, since it uses less digits than its factorization.

343641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114550.

The product of its digits is 864, while the sum is 21.

The square root of 343641 is about 586.2090070956. The cubic root of 343641 is about 70.0435783070.

Adding to 343641 its reverse (146343), we get a palindrome (489984).

The spelling of 343641 in words is "three hundred forty-three thousand, six hundred forty-one".