343403420 has 24 divisors (see below), whose sum is σ = 721532448. Its totient is φ = 137288000.

The previous prime is 343403419. The next prime is 343403491. The reversal of 343403420 is 24304343.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49145 + ... + 55695.

It is an arithmetic number, because the mean of its divisors is an integer number (30063852).

Almost surely, 2^343403420 is an apocalyptic number.

It is an amenable number.

343403420 is an abundant number, since it is smaller than the sum of its proper divisors (378129028).

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

343403420 is a wasteful number, since it uses less digits than its factorization.

343403420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9181 (or 9179 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 343403420 is about 18531.1472931387. The cubic root of 343403420 is about 700.2743278519.

Adding to 343403420 its reverse (24304343), we get a palindrome (367707763).

The spelling of 343403420 in words is "three hundred forty-three million, four hundred three thousand, four hundred twenty".