12103517 has 2 divisors, whose sum is σ = 12103518. Its totient is φ = 12103516.

The previous prime is 12103501. The next prime is 12103529. The reversal of 12103517 is 71530121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11600836 + 502681 = 3406^2 + 709^2 .

It is a cyclic number.

It is not a de Polignac number, because 12103517 - 2⁴ = 12103501 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12103577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051758 + 6051759.

It is an arithmetic number, because the mean of its divisors is an integer number (6051759).

Almost surely, 2^12103517 is an apocalyptic number.

It is an amenable number.

12103517 is a deficient number, since it is larger than the sum of its proper divisors (1).

12103517 is an equidigital number, since it uses as much as digits as its factorization.

12103517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 12103517 is about 3479.0109226618. The cubic root of 12103517 is about 229.5992833548.

Adding to 12103517 its reverse (71530121), we get a palindrome (83633638).

The spelling of 12103517 in words is "twelve million, one hundred three thousand, five hundred seventeen".