343531313 has 2 divisors, whose sum is σ = 343531314. Its totient is φ = 343531312.

The previous prime is 343531297. The next prime is 343531339. The reversal of 343531313 is 313135343.

It is an a-pointer prime, because the next prime (343531339) can be obtained adding 343531313 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302481664 + 41049649 = 17392^2 + 6407^2 .

It is a cyclic number.

It is not a de Polignac number, because 343531313 - 2⁴ = 343531297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (343531613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171765656 + 171765657.

It is an arithmetic number, because the mean of its divisors is an integer number (171765657).

Almost surely, 2^343531313 is an apocalyptic number.

It is an amenable number.

343531313 is a deficient number, since it is larger than the sum of its proper divisors (1).

343531313 is an equidigital number, since it uses as much as digits as its factorization.

343531313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 26.

The square root of 343531313 is about 18534.5977296514. The cubic root of 343531313 is about 700.3612509511.

Adding to 343531313 its reverse (313135343), we get a palindrome (656666656).

The spelling of 343531313 in words is "three hundred forty-three million, five hundred thirty-one thousand, three hundred thirteen".