17031997 has 2 divisors, whose sum is σ = 17031998. Its totient is φ = 17031996.

The previous prime is 17031991. The next prime is 17032009. The reversal of 17031997 is 79913071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16475481 + 556516 = 4059^2 + 746^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17031997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17031991) 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, 8515998 + 8515999.

It is an arithmetic number, because the mean of its divisors is an integer number (8515999).

Almost surely, 2^17031997 is an apocalyptic number.

It is an amenable number.

17031997 is a deficient number, since it is larger than the sum of its proper divisors (1).

17031997 is an equidigital number, since it uses as much as digits as its factorization.

17031997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11907, while the sum is 37.

The square root of 17031997 is about 4126.9840077228. The cubic root of 17031997 is about 257.2893781508.

The spelling of 17031997 in words is "seventeen million, thirty-one thousand, nine hundred ninety-seven".