343803820 has 24 divisors (see below), whose sum is σ = 725776128. Its totient is φ = 136800000.

The previous prime is 343803799. The next prime is 343803827. The reversal of 343803820 is 28308343.

343803820 = T₃₂₅ + T₃₂₆ + ... + T₁₂₇₉.

It is not an unprimeable number, because it can be changed into a prime (343803827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41181 + ... + 48820.

It is an arithmetic number, because the mean of its divisors is an integer number (30240672).

Almost surely, 2^343803820 is an apocalyptic number.

It is an amenable number.

343803820 is an abundant number, since it is smaller than the sum of its proper divisors (381972308).

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

343803820 is a wasteful number, since it uses less digits than its factorization.

343803820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90201 (or 90199 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 343803820 is about 18541.9475783964. The cubic root of 343803820 is about 700.5463897274.

It can be divided in two parts, 34380 and 3820, that multiplied together give a square (131331600 = 11460²).

The spelling of 343803820 in words is "three hundred forty-three million, eight hundred three thousand, eight hundred twenty".