349803317 has 2 divisors, whose sum is σ = 349803318. Its totient is φ = 349803316.

The previous prime is 349803313. The next prime is 349803359. The reversal of 349803317 is 713308943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 345439396 + 4363921 = 18586^2 + 2089^2 .

It is an emirp because it is prime and its reverse (713308943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 349803317 - 2² = 349803313 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349803313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174901658 + 174901659.

It is an arithmetic number, because the mean of its divisors is an integer number (174901659).

Almost surely, 2^349803317 is an apocalyptic number.

It is an amenable number.

349803317 is a deficient number, since it is larger than the sum of its proper divisors (1).

349803317 is an equidigital number, since it uses as much as digits as its factorization.

349803317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 349803317 is about 18703.0296208930. The cubic root of 349803317 is about 704.5978404851.

The spelling of 349803317 in words is "three hundred forty-nine million, eight hundred three thousand, three hundred seventeen".