343813213 has 8 divisors (see below), whose sum is σ = 353492568. Its totient is φ = 334154304.

The previous prime is 343813207. The next prime is 343813229. The reversal of 343813213 is 312318343.

It can be written as a sum of positive squares in 4 ways, for example, as 1304164 + 342509049 = 1142^2 + 18507^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 343813213 - 2⁵ = 343813181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343813273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32895 + ... + 42067.

It is an arithmetic number, because the mean of its divisors is an integer number (44186571).

Almost surely, 2^343813213 is an apocalyptic number.

It is an amenable number.

343813213 is a deficient number, since it is larger than the sum of its proper divisors (9679355).

343813213 is a wasteful number, since it uses less digits than its factorization.

343813213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10223.

The product of its digits is 5184, while the sum is 28.

The square root of 343813213 is about 18542.2008672110. The cubic root of 343813213 is about 700.5527695017.

The spelling of 343813213 in words is "three hundred forty-three million, eight hundred thirteen thousand, two hundred thirteen".