343211904 has 160 divisors (see below), whose sum is σ = 1167553200. Its totient is φ = 98039808.

The previous prime is 343211893. The next prime is 343211959. The reversal of 343211904 is 409112343.

It is a super-2 number, since 2×343211904² = 235588822094610432, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 70212 + ... + 74940.

Almost surely, 2^343211904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 343211904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (583776600).

343211904 is an abundant number, since it is smaller than the sum of its proper divisors (824341296).

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

343211904 is an equidigital number, since it uses as much as digits as its factorization.

343211904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4762 (or 4741 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 343211904 is about 18525.9791644059. The cubic root of 343211904 is about 700.1441227056.

The spelling of 343211904 in words is "three hundred forty-three million, two hundred eleven thousand, nine hundred four".