343129640 has 64 divisors (see below), whose sum is σ = 920712960. Its totient is φ = 112527360.

The previous prime is 343129613. The next prime is 343129667. The reversal of 343129640 is 46921343.

It is an interprime number because it is at equal distance from previous prime (343129613) and next prime (343129667).

It is a junction number, because it is equal to n+sod(n) for n = 343129597 and 343129606.

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, 20201 + ... + 33080.

It is an arithmetic number, because the mean of its divisors is an integer number (14386140).

Almost surely, 2^343129640 is an apocalyptic number.

It is an amenable number.

343129640 is an abundant number, since it is smaller than the sum of its proper divisors (577583320).

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

343129640 is a wasteful number, since it uses less digits than its factorization.

343129640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53322 (or 53318 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 343129640 is about 18523.7587978250. The cubic root of 343129640 is about 700.0881793677.

The spelling of 343129640 in words is "three hundred forty-three million, one hundred twenty-nine thousand, six hundred forty".