343021313 has 2 divisors, whose sum is σ = 343021314. Its totient is φ = 343021312.

The previous prime is 343021303. The next prime is 343021319. The reversal of 343021313 is 313120343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 321556624 + 21464689 = 17932^2 + 4633^2 .

It is a cyclic number.

It is not a de Polignac number, because 343021313 - 2⁴ = 343021297 is a prime.

It is not a weakly prime, because it can be changed into another prime (343021319) 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, 171510656 + 171510657.

It is an arithmetic number, because the mean of its divisors is an integer number (171510657).

Almost surely, 2^343021313 is an apocalyptic number.

It is an amenable number.

343021313 is a deficient number, since it is larger than the sum of its proper divisors (1).

343021313 is an equidigital number, since it uses as much as digits as its factorization.

343021313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 343021313 is about 18520.8345654293. The cubic root of 343021313 is about 700.0144983392.

Adding to 343021313 its reverse (313120343), we get a palindrome (656141656).

The spelling of 343021313 in words is "three hundred forty-three million, twenty-one thousand, three hundred thirteen".