343320013 has 2 divisors, whose sum is σ = 343320014. Its totient is φ = 343320012.

The previous prime is 343320001. The next prime is 343320037. The reversal of 343320013 is 310023343.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 307055529 + 36264484 = 17523^2 + 6022^2 .

It is a cyclic number.

It is not a de Polignac number, because 343320013 - 2²⁵ = 309765581 is a prime.

It is a super-3 number, since 3×343320013³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343320073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171660006 + 171660007.

It is an arithmetic number, because the mean of its divisors is an integer number (171660007).

Almost surely, 2^343320013 is an apocalyptic number.

It is an amenable number.

343320013 is a deficient number, since it is larger than the sum of its proper divisors (1).

343320013 is an equidigital number, since it uses as much as digits as its factorization.

343320013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 343320013 is about 18528.8967021785. The cubic root of 343320013 is about 700.2176282513.

Adding to 343320013 its reverse (310023343), we get a palindrome (653343356).

It can be divided in two parts, 343 and 320013, that added together give a square (320356 = 566²).

The spelling of 343320013 in words is "three hundred forty-three million, three hundred twenty thousand, thirteen".