211340232 has 32 divisors (see below), whose sum is σ = 587056800. Its totient is φ = 70446672.

The previous prime is 211340167. The next prime is 211340257. The reversal of 211340232 is 232043112.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 7 ways as a sum of consecutive naturals, for example, 488998 + ... + 489429.

It is an arithmetic number, because the mean of its divisors is an integer number (18345525).

Almost surely, 2^211340232 is an apocalyptic number.

It is an amenable number.

211340232 is an abundant number, since it is smaller than the sum of its proper divisors (375716568).

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

211340232 is a wasteful number, since it uses less digits than its factorization.

211340232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978442 (or 978432 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 211340232 is about 14537.5455975209. The cubic root of 211340232 is about 595.6539964273.

Adding to 211340232 its reverse (232043112), we get a palindrome (443383344).

The spelling of 211340232 in words is "two hundred eleven million, three hundred forty thousand, two hundred thirty-two".