343321331 has 16 divisors (see below), whose sum is σ = 362097120. Its totient is φ = 325140480.

The previous prime is 343321313. The next prime is 343321339. The reversal of 343321331 is 133123343.

It is a cyclic number.

It is not a de Polignac number, because 343321331 - 2¹⁴ = 343304947 is a prime.

It is a super-2 number, since 2×343321331² = 235739072639223122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 343321297 and 343321306.

It is not an unprimeable number, because it can be changed into a prime (343321339) 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 in 15 ways as a sum of consecutive naturals, for example, 339755 + ... + 340763.

It is an arithmetic number, because the mean of its divisors is an integer number (22631070).

Almost surely, 2^343321331 is an apocalyptic number.

343321331 is a deficient number, since it is larger than the sum of its proper divisors (18775789).

343321331 is a wasteful number, since it uses less digits than its factorization.

343321331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286.

The product of its digits is 1944, while the sum is 23.

The square root of 343321331 is about 18528.9322682123. The cubic root of 343321331 is about 700.2185242915.

Adding to 343321331 its reverse (133123343), we get a palindrome (476444674).

The spelling of 343321331 in words is "three hundred forty-three million, three hundred twenty-one thousand, three hundred thirty-one".