343445140 has 24 divisors (see below), whose sum is σ = 759195360. Its totient is φ = 130147488.

The previous prime is 343445129. The next prime is 343445161. The reversal of 343445140 is 41544343.

It is a junction number, because it is equal to n+sod(n) for n = 343445099 and 343445108.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 451522 + ... + 452281.

It is an arithmetic number, because the mean of its divisors is an integer number (31633140).

Almost surely, 2^343445140 is an apocalyptic number.

It is an amenable number.

343445140 is an abundant number, since it is smaller than the sum of its proper divisors (415750220).

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

343445140 is a wasteful number, since it uses less digits than its factorization.

343445140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903831 (or 903829 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 343445140 is about 18532.2729312947. The cubic root of 343445140 is about 700.3026854241.

Adding to 343445140 its reverse (41544343), we get a palindrome (384989483).

The spelling of 343445140 in words is "three hundred forty-three million, four hundred forty-five thousand, one hundred forty".