344021 has 2 divisors, whose sum is σ = 344022. Its totient is φ = 344020.

The previous prime is 344017. The next prime is 344039. The reversal of 344021 is 120443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 343396 + 625 = 586^2 + 25^2 .

It is a cyclic number.

It is not a de Polignac number, because 344021 - 2² = 344017 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 343987 and 344005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (344221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172010 + 172011.

It is an arithmetic number, because the mean of its divisors is an integer number (172011).

2³⁴⁴⁰²¹ is an apocalyptic number.

It is an amenable number.

344021 is a deficient number, since it is larger than the sum of its proper divisors (1).

344021 is an equidigital number, since it uses as much as digits as its factorization.

344021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 344021 is about 586.5330340228. The cubic root of 344021 is about 70.0693869803.

Adding to 344021 its sum of digits (14), we get a triangular number (344035 = T₈₂₉).

Adding to 344021 its reverse (120443), we get a palindrome (464464).

The spelling of 344021 in words is "three hundred forty-four thousand, twenty-one", and thus it is an iban number.