343200321 has 12 divisors (see below), whose sum is σ = 514094672. Its totient is φ = 228800052.

The previous prime is 343200283. The next prime is 343200359. The reversal of 343200321 is 123002343.

343200321 is a `hidden beast` number, since 343 + 2 + 0 + 0 + 321 = 666.

It is an interprime number because it is at equal distance from previous prime (343200283) and next prime (343200359).

It is not a de Polignac number, because 343200321 - 2⁹ = 343199809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 343200294 and 343200303.

It is not an unprimeable number, because it can be changed into a prime (343200391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 705931 + ... + 706416.

Almost surely, 2^343200321 is an apocalyptic number.

It is an amenable number.

343200321 is a deficient number, since it is larger than the sum of its proper divisors (170894351).

343200321 is an equidigital number, since it uses as much as digits as its factorization.

343200321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412362 (or 1412350 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 343200321 is about 18525.6665467130. Note that the first 3 decimals coincide. The cubic root of 343200321 is about 700.1362462688.

Adding to 343200321 its reverse (123002343), we get a palindrome (466202664).

The spelling of 343200321 in words is "three hundred forty-three million, two hundred thousand, three hundred twenty-one".