343220 has 18 divisors (see below), whose sum is σ = 726306. Its totient is φ = 136240.

The previous prime is 343219. The next prime is 343237. The reversal of 343220 is 22343.

It can be written as a sum of positive squares in only one way, i.e., 274576 + 68644 = 524^2 + 262^2 .

It is a junction number, because it is equal to n+sod(n) for n = 343195 and 343204.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343220.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2555 + ... + 2685.

2³⁴³²²⁰ is an apocalyptic number.

It is an amenable number.

343220 is an abundant number, since it is smaller than the sum of its proper divisors (383086).

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

343220 is a wasteful number, since it uses less digits than its factorization.

343220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 343220 is about 585.8498101049. The cubic root of 343220 is about 70.0149627878.

Subtracting from 343220 its sum of digits (14), we obtain a triangular number (343206 = T₈₂₈).

Adding to 343220 its reverse (22343), we get a palindrome (365563).

The spelling of 343220 in words is "three hundred forty-three thousand, two hundred twenty", and thus it is an iban number.