345200017 has 2 divisors, whose sum is σ = 345200018. Its totient is φ = 345200016.

The previous prime is 345199997. The next prime is 345200039. The reversal of 345200017 is 710002543.

It is an a-pointer prime, because the next prime (345200039) can be obtained adding 345200017 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335768976 + 9431041 = 18324^2 + 3071^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345200017 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345200617) 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, 172600008 + 172600009.

It is an arithmetic number, because the mean of its divisors is an integer number (172600009).

Almost surely, 2^345200017 is an apocalyptic number.

It is an amenable number.

345200017 is a deficient number, since it is larger than the sum of its proper divisors (1).

345200017 is an equidigital number, since it uses as much as digits as its factorization.

345200017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 345200017 is about 18579.5591174818. The cubic root of 345200017 is about 701.4934217831.

The spelling of 345200017 in words is "three hundred forty-five million, two hundred thousand, seventeen".