103211117 has 2 divisors, whose sum is σ = 103211118. Its totient is φ = 103211116.

The previous prime is 103211113. The next prime is 103211153. The reversal of 103211117 is 711112301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59505796 + 43705321 = 7714^2 + 6611^2 .

It is an emirp because it is prime and its reverse (711112301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 103211117 - 2² = 103211113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103211095 and 103211104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103211113) 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, 51605558 + 51605559.

It is an arithmetic number, because the mean of its divisors is an integer number (51605559).

Almost surely, 2^103211117 is an apocalyptic number.

It is an amenable number.

103211117 is a deficient number, since it is larger than the sum of its proper divisors (1).

103211117 is an equidigital number, since it uses as much as digits as its factorization.

103211117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42, while the sum is 17.

The square root of 103211117 is about 10159.2872289349. The cubic root of 103211117 is about 469.0748619290.

Adding to 103211117 its reverse (711112301), we get a palindrome (814323418).

The spelling of 103211117 in words is "one hundred three million, two hundred eleven thousand, one hundred seventeen".