343213420 has 48 divisors (see below), whose sum is σ = 787576608. Its totient is φ = 124597760.

The previous prime is 343213417. The next prime is 343213433. The reversal of 343213420 is 24312343.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 343213391 and 343213400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208842 + ... + 210478.

It is an arithmetic number, because the mean of its divisors is an integer number (16407846).

Almost surely, 2^343213420 is an apocalyptic number.

It is an amenable number.

343213420 is an abundant number, since it is smaller than the sum of its proper divisors (444363188).

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

343213420 is a wasteful number, since it uses less digits than its factorization.

343213420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610 (or 2608 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 343213420 is about 18526.0200798768. The cubic root of 343213420 is about 700.1451535720.

Adding to 343213420 its reverse (24312343), we get a palindrome (367525763).

The spelling of 343213420 in words is "three hundred forty-three million, two hundred thirteen thousand, four hundred twenty".