103106321 has 2 divisors, whose sum is σ = 103106322. Its totient is φ = 103106320.

The previous prime is 103106317. The next prime is 103106357. The reversal of 103106321 is 123601301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91107025 + 11999296 = 9545^2 + 3464^2 .

It is a cyclic number.

It is not a de Polignac number, because 103106321 - 2² = 103106317 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103106321.

It is not a weakly prime, because it can be changed into another prime (103106371) 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, 51553160 + 51553161.

It is an arithmetic number, because the mean of its divisors is an integer number (51553161).

Almost surely, 2^103106321 is an apocalyptic number.

It is an amenable number.

103106321 is a deficient number, since it is larger than the sum of its proper divisors (1).

103106321 is an equidigital number, since it uses as much as digits as its factorization.

103106321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 103106321 is about 10154.1282737614. The cubic root of 103106321 is about 468.9160488819.

Adding to 103106321 its reverse (123601301), we get a palindrome (226707622).

The spelling of 103106321 in words is "one hundred three million, one hundred six thousand, three hundred twenty-one".