211342650 has 48 divisors (see below), whose sum is σ = 526466304. Its totient is φ = 56106880.

The previous prime is 211342627. The next prime is 211342667. The reversal of 211342650 is 56243112.

211342650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 211342650.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31927 + ... + 37973.

It is an arithmetic number, because the mean of its divisors is an integer number (10968048).

Almost surely, 2^211342650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211342650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263233152).

211342650 is an abundant number, since it is smaller than the sum of its proper divisors (315123654).

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

211342650 is a wasteful number, since it uses less digits than its factorization.

211342650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6295 (or 6290 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 211342650 is about 14537.6287612526. The cubic root of 211342650 is about 595.6562680975.

Adding to 211342650 its reverse (56243112), we get a palindrome (267585762).

The spelling of 211342650 in words is "two hundred eleven million, three hundred forty-two thousand, six hundred fifty".