211344330 has 16 divisors (see below), whose sum is σ = 507226464. Its totient is φ = 56358480.

The previous prime is 211344319. The next prime is 211344347. The reversal of 211344330 is 33443112.

211344330 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 211344297 and 211344306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3522376 + ... + 3522435.

It is an arithmetic number, because the mean of its divisors is an integer number (31701654).

Almost surely, 2^211344330 is an apocalyptic number.

211344330 is an abundant number, since it is smaller than the sum of its proper divisors (295882134).

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

211344330 is a wasteful number, since it uses less digits than its factorization.

211344330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7044821.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 211344330 is about 14537.6865422253. The cubic root of 211344330 is about 595.6578464188.

Adding to 211344330 its reverse (33443112), we get a palindrome (244787442).

The spelling of 211344330 in words is "two hundred eleven million, three hundred forty-four thousand, three hundred thirty".