349817317 has 2 divisors, whose sum is σ = 349817318. Its totient is φ = 349817316.

The previous prime is 349817239. The next prime is 349817333. The reversal of 349817317 is 713718943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241678116 + 108139201 = 15546^2 + 10399^2 .

It is a cyclic number.

It is not a de Polignac number, because 349817317 - 2¹¹ = 349815269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349817357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174908658 + 174908659.

It is an arithmetic number, because the mean of its divisors is an integer number (174908659).

Almost surely, 2^349817317 is an apocalyptic number.

It is an amenable number.

349817317 is a deficient number, since it is larger than the sum of its proper divisors (1).

349817317 is an equidigital number, since it uses as much as digits as its factorization.

349817317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 43.

The square root of 349817317 is about 18703.4038880627. The cubic root of 349817317 is about 704.6072402798.

The spelling of 349817317 in words is "three hundred forty-nine million, eight hundred seventeen thousand, three hundred seventeen".