103100321 has 2 divisors, whose sum is σ = 103100322. Its totient is φ = 103100320.

The previous prime is 103100303. The next prime is 103100341. The reversal of 103100321 is 123001301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89491600 + 13608721 = 9460^2 + 3689^2 .

It is an emirp because it is prime and its reverse (123001301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103100321 - 2²⁶ = 35991457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (103100341) 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, 51550160 + 51550161.

It is an arithmetic number, because the mean of its divisors is an integer number (51550161).

Almost surely, 2^103100321 is an apocalyptic number.

It is an amenable number.

103100321 is a deficient number, since it is larger than the sum of its proper divisors (1).

103100321 is an equidigital number, since it uses as much as digits as its factorization.

103100321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 103100321 is about 10153.8328231264. The cubic root of 103100321 is about 468.9069529285.

Adding to 103100321 its reverse (123001301), we get a palindrome (226101622).

The spelling of 103100321 in words is "one hundred three million, one hundred thousand, three hundred twenty-one".