341821 has 2 divisors, whose sum is σ = 341822. Its totient is φ = 341820.

The previous prime is 341813. The next prime is 341827. The reversal of 341821 is 128143.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 236196 + 105625 = 486^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 341821 - 2³ = 341813 is a prime.

341821 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (341827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170910 + 170911.

It is an arithmetic number, because the mean of its divisors is an integer number (170911).

2³⁴¹⁸²¹ is an apocalyptic number.

It is an amenable number.

341821 is a deficient number, since it is larger than the sum of its proper divisors (1).

341821 is an equidigital number, since it uses as much as digits as its factorization.

341821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

The square root of 341821 is about 584.6545988872. The cubic root of 341821 is about 69.9197038468.

Adding to 341821 its reverse (128143), we get a palindrome (469964).

The spelling of 341821 in words is "three hundred forty-one thousand, eight hundred twenty-one".