211420230 has 96 divisors (see below), whose sum is σ = 591411456. Its totient is φ = 47379456.

The previous prime is 211420229. The next prime is 211420247. The reversal of 211420230 is 32024112.

211420230 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 (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 47 ways as a sum of consecutive naturals, for example, 1975837 + ... + 1975943.

It is an arithmetic number, because the mean of its divisors is an integer number (6160536).

Almost surely, 2^211420230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211420230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295705728).

211420230 is an abundant number, since it is smaller than the sum of its proper divisors (379991226).

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

211420230 is a wasteful number, since it uses less digits than its factorization.

211420230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 211420230 is about 14540.2967645093. The cubic root of 211420230 is about 595.7291440015.

Adding to 211420230 its reverse (32024112), we get a palindrome (243444342).

The spelling of 211420230 in words is "two hundred eleven million, four hundred twenty thousand, two hundred thirty".