103717321 has 2 divisors, whose sum is σ = 103717322. Its totient is φ = 103717320.

The previous prime is 103717319. The next prime is 103717349. The reversal of 103717321 is 123717301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98010000 + 5707321 = 9900^2 + 2389^2 .

It is a cyclic number.

It is not a de Polignac number, because 103717321 - 2¹ = 103717319 is a prime.

Together with 103717319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (103717721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51858660 + 51858661.

It is an arithmetic number, because the mean of its divisors is an integer number (51858661).

Almost surely, 2^103717321 is an apocalyptic number.

It is an amenable number.

103717321 is a deficient number, since it is larger than the sum of its proper divisors (1).

103717321 is an equidigital number, since it uses as much as digits as its factorization.

103717321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 103717321 is about 10184.1701183749. The cubic root of 103717321 is about 469.8404785327.

The spelling of 103717321 in words is "one hundred three million, seven hundred seventeen thousand, three hundred twenty-one".