211043140 has 96 divisors (see below), whose sum is σ = 565576704. Its totient is φ = 64229760.

The previous prime is 211043137. The next prime is 211043149. The reversal of 211043140 is 41340112.

211043140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (211043149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64627 + ... + 67813.

It is an arithmetic number, because the mean of its divisors is an integer number (5891424).

Almost surely, 2^211043140 is an apocalyptic number.

211043140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211043140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282788352).

211043140 is an abundant number, since it is smaller than the sum of its proper divisors (354533564).

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

211043140 is a wasteful number, since it uses less digits than its factorization.

211043140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3257 (or 3255 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 211043140 is about 14527.3239104799. The cubic root of 211043140 is about 595.3747515611.

Adding to 211043140 its reverse (41340112), we get a palindrome (252383252).

The spelling of 211043140 in words is "two hundred eleven million, forty-three thousand, one hundred forty".