211034430 has 128 divisors (see below), whose sum is σ = 622080000. Its totient is φ = 50637312.

The previous prime is 211034419. The next prime is 211034431. The reversal of 211034430 is 34430112.

211034430 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211034431) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 104571 + ... + 106569.

It is an arithmetic number, because the mean of its divisors is an integer number (4860000).

Almost surely, 2^211034430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211034430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311040000).

211034430 is an abundant number, since it is smaller than the sum of its proper divisors (411045570).

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

211034430 is a wasteful number, since it uses less digits than its factorization.

211034430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055 (or 2049 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 211034430 is about 14527.0241274667. The cubic root of 211034430 is about 595.3665608417.

Adding to 211034430 its reverse (34430112), we get a palindrome (245464542).

The spelling of 211034430 in words is "two hundred eleven million, thirty-four thousand, four hundred thirty".