343000505420 has 48 divisors (see below), whose sum is σ = 775844509440. Its totient is φ = 126956362176.

The previous prime is 343000505383. The next prime is 343000505437. The reversal of 343000505420 is 24505000343.

It is a self number, because there is not a number n which added to its sum of digits gives 343000505420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10479392 + ... + 10512071.

It is an arithmetic number, because the mean of its divisors is an integer number (16163427280).

Almost surely, 2^343000505420 is an apocalyptic number.

It is an amenable number.

343000505420 is an abundant number, since it is smaller than the sum of its proper divisors (432844004020).

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

343000505420 is a wasteful number, since it uses less digits than its factorization.

343000505420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20991534 (or 20991532 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 26.

Adding to 343000505420 its reverse (24505000343), we get a palindrome (367505505763).

The spelling of 343000505420 in words is "three hundred forty-three billion, five hundred five thousand, four hundred twenty".