103211312317 has 2 divisors, whose sum is σ = 103211312318. Its totient is φ = 103211312316.

The previous prime is 103211312293. The next prime is 103211312371. The reversal of 103211312317 is 713213112301.

Together with next prime (103211312371) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93300313401 + 9910998916 = 305451^2 + 99554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103211312317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103211312291 and 103211312300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103211312117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51605656158 + 51605656159.

It is an arithmetic number, because the mean of its divisors is an integer number (51605656159).

Almost surely, 2^103211312317 is an apocalyptic number.

It is an amenable number.

103211312317 is a deficient number, since it is larger than the sum of its proper divisors (1).

103211312317 is an equidigital number, since it uses as much as digits as its factorization.

103211312317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

Adding to 103211312317 its reverse (713213112301), we get a palindrome (816424424618).

The spelling of 103211312317 in words is "one hundred three billion, two hundred eleven million, three hundred twelve thousand, three hundred seventeen".