343121 has 4 divisors (see below), whose sum is σ = 361200. Its totient is φ = 325044.

The previous prime is 343087. The next prime is 343127. The reversal of 343121 is 121343.

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.

It is a cyclic number.

It is not a de Polignac number, because 343121 - 2¹⁴ = 326737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 343096 and 343105.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343121.

It is not an unprimeable number, because it can be changed into a prime (343127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9011 + ... + 9048.

It is an arithmetic number, because the mean of its divisors is an integer number (90300).

2³⁴³¹²¹ is an apocalyptic number.

It is an amenable number.

343121 is a deficient number, since it is larger than the sum of its proper divisors (18079).

343121 is a wasteful number, since it uses less digits than its factorization.

343121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18078.

The product of its digits is 72, while the sum is 14.

The square root of 343121 is about 585.7653113663. The cubic root of 343121 is about 70.0082303248.

Adding to 343121 its reverse (121343), we get a palindrome (464464).

It can be divided in two parts, 343 and 121, that added together give a palindrome (464).

The spelling of 343121 in words is "three hundred forty-three thousand, one hundred twenty-one", and thus it is an iban number.