343400320 has 32 divisors (see below), whose sum is σ = 820942920. Its totient is φ = 137359872.

The previous prime is 343400261. The next prime is 343400363. The reversal of 343400320 is 23004343.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×343400320² = 235847559552204800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267642 + ... + 268921.

Almost surely, 2^343400320 is an apocalyptic number.

It is an amenable number.

343400320 is an abundant number, since it is smaller than the sum of its proper divisors (477542600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

343400320 is an equidigital number, since it uses as much as digits as its factorization.

343400320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536582 (or 536570 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 343400320 is about 18531.0636499905. The cubic root of 343400320 is about 700.2722206539.

Adding to 343400320 its reverse (23004343), we get a palindrome (366404663).

The spelling of 343400320 in words is "three hundred forty-three million, four hundred thousand, three hundred twenty".