219341321 has 2 divisors, whose sum is σ = 219341322. Its totient is φ = 219341320.

The previous prime is 219341207. The next prime is 219341329. The reversal of 219341321 is 123143912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186622921 + 32718400 = 13661^2 + 5720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-219341321 is a prime.

It is a super-2 number, since 2×219341321² = 96221230196050082, which contains 22 as substring.

It is equal to p_12088340 and since 219341321 and 12088340 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (219341329) 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 as a sum of consecutive naturals, namely, 109670660 + 109670661.

It is an arithmetic number, because the mean of its divisors is an integer number (109670661).

Almost surely, 2^219341321 is an apocalyptic number.

It is an amenable number.

219341321 is a deficient number, since it is larger than the sum of its proper divisors (1).

219341321 is an equidigital number, since it uses as much as digits as its factorization.

219341321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 26.

The square root of 219341321 is about 14810.1762649875. The cubic root of 219341321 is about 603.0779986139.

The spelling of 219341321 in words is "two hundred nineteen million, three hundred forty-one thousand, three hundred twenty-one".