211411340 has 48 divisors (see below), whose sum is σ = 521113152. Its totient is φ = 70523136.

The previous prime is 211411307. The next prime is 211411379. The reversal of 211411340 is 43114112.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15227 + ... + 25586.

It is an arithmetic number, because the mean of its divisors is an integer number (10856524).

Almost surely, 2^211411340 is an apocalyptic number.

211411340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211411340 is an abundant number, since it is smaller than the sum of its proper divisors (309701812).

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

211411340 is a wasteful number, since it uses less digits than its factorization.

211411340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40866 (or 40864 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 211411340 is about 14539.9910591444. The cubic root of 211411340 is about 595.7207939549.

Adding to 211411340 its reverse (43114112), we get a palindrome (254525452).

The spelling of 211411340 in words is "two hundred eleven million, four hundred eleven thousand, three hundred forty".