343053321 has 32 divisors (see below), whose sum is σ = 500088960. Its totient is φ = 207926784.

The previous prime is 343053311. The next prime is 343053367. The reversal of 343053321 is 123350343.

It is a happy number.

It is not a de Polignac number, because 343053321 - 2¹⁴ = 343036937 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 343053291 and 343053300.

It is not an unprimeable number, because it can be changed into a prime (343053311) 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 in 31 ways as a sum of consecutive naturals, for example, 1095861 + ... + 1096173.

It is an arithmetic number, because the mean of its divisors is an integer number (15627780).

Almost surely, 2^343053321 is an apocalyptic number.

It is an amenable number.

343053321 is a deficient number, since it is larger than the sum of its proper divisors (157035639).

343053321 is a wasteful number, since it uses less digits than its factorization.

343053321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665.

The product of its (nonzero) digits is 3240, while the sum is 24.

The square root of 343053321 is about 18521.6986532013. The cubic root of 343053321 is about 700.0362709097.

The spelling of 343053321 in words is "three hundred forty-three million, fifty-three thousand, three hundred twenty-one".