343203840 has 504 divisors, whose sum is σ = 1456776360. Its totient is φ = 74317824.

The previous prime is 343203827. The next prime is 343203853. The reversal of 343203840 is 48302343.

343203840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (343203827) and next prime (343203853).

It is a tau number, because it is divible by the number of its divisors (504).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18063351 + ... + 18063369.

Almost surely, 2^343203840 is an apocalyptic number.

343203840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 343203840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (728388180).

343203840 is an abundant number, since it is smaller than the sum of its proper divisors (1113572520).

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

343203840 is a wasteful number, since it uses less digits than its factorization.

343203840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 36 counting only the distinct ones).

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

The square root of 343203840 is about 18525.7615228093. The cubic root of 343203840 is about 700.1386392065.

The spelling of 343203840 in words is "three hundred forty-three million, two hundred three thousand, eight hundred forty".