343214820 has 240 divisors, whose sum is σ = 1189594560. Its totient is φ = 82301184.

The previous prime is 343214801. The next prime is 343214869. The reversal of 343214820 is 28412343.

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

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 79 ways as a sum of consecutive naturals, for example, 905391 + ... + 905769.

It is an arithmetic number, because the mean of its divisors is an integer number (4956644).

Almost surely, 2^343214820 is an apocalyptic number.

343214820 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 343214820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594797280).

343214820 is an abundant number, since it is smaller than the sum of its proper divisors (846379740).

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

343214820 is a wasteful number, since it uses less digits than its factorization.

343214820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 343214820 is about 18526.0578645323. The cubic root of 343214820 is about 700.1461055568.

The spelling of 343214820 in words is "three hundred forty-three million, two hundred fourteen thousand, eight hundred twenty".