17312111 has 2 divisors, whose sum is σ = 17312112. Its totient is φ = 17312110.

The previous prime is 17312089. The next prime is 17312131. The reversal of 17312111 is 11121371.

It is a strong prime.

It is an emirp because it is prime and its reverse (11121371) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17312111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17312111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17312131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8656055 + 8656056.

It is an arithmetic number, because the mean of its divisors is an integer number (8656056).

Almost surely, 2^17312111 is an apocalyptic number.

17312111 is a deficient number, since it is larger than the sum of its proper divisors (1).

17312111 is an equidigital number, since it uses as much as digits as its factorization.

17312111 is an odious number, because the sum of its binary digits is odd.

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

The square root of 17312111 is about 4160.7824985212. The cubic root of 17312111 is about 258.6922050354.

Adding to 17312111 its reverse (11121371), we get a palindrome (28433482).

The spelling of 17312111 in words is "seventeen million, three hundred twelve thousand, one hundred eleven".