211103430 has 32 divisors (see below), whose sum is σ = 528678144. Its totient is φ = 53846496.

The previous prime is 211103429. The next prime is 211103449. The reversal of 211103430 is 34301112.

211103430 is digitally balanced in base 2, 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 (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152284 + ... + 153663.

It is an arithmetic number, because the mean of its divisors is an integer number (16521192).

Almost surely, 2^211103430 is an apocalyptic number.

211103430 is an abundant number, since it is smaller than the sum of its proper divisors (317574714).

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

211103430 is a wasteful number, since it uses less digits than its factorization.

211103430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305980.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 211103430 is about 14529.3988175698. The cubic root of 211103430 is about 595.4314409599.

Adding to 211103430 its reverse (34301112), we get a palindrome (245404542).

The spelling of 211103430 in words is "two hundred eleven million, one hundred three thousand, four hundred thirty".