343820430 has 32 divisors (see below), whose sum is σ = 916855200. Its totient is φ = 91685376.

The previous prime is 343820413. The next prime is 343820431. The reversal of 343820430 is 34028343.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 343820394 and 343820403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343820431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 636435 + ... + 636974.

It is an arithmetic number, because the mean of its divisors is an integer number (28651725).

Almost surely, 2^343820430 is an apocalyptic number.

343820430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

343820430 is an abundant number, since it is smaller than the sum of its proper divisors (573034770).

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

343820430 is a wasteful number, since it uses less digits than its factorization.

343820430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273425 (or 1273419 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 343820430 is about 18542.3954763132. The cubic root of 343820430 is about 700.5576712465.

Adding to 343820430 its reverse (34028343), we get a palindrome (377848773).

The spelling of 343820430 in words is "three hundred forty-three million, eight hundred twenty thousand, four hundred thirty".