211306252 has 12 divisors (see below), whose sum is σ = 369890136. Its totient is φ = 105623360.

The previous prime is 211306237. The next prime is 211306253. The reversal of 211306252 is 252603112.

It is not an unprimeable number, because it can be changed into a prime (211306253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18852 + ... + 27892.

It is an arithmetic number, because the mean of its divisors is an integer number (30824178).

Almost surely, 2^211306252 is an apocalyptic number.

It is an amenable number.

211306252 is a deficient number, since it is larger than the sum of its proper divisors (158583884).

211306252 is a wasteful number, since it uses less digits than its factorization.

211306252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14888 (or 14886 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 211306252 is about 14536.3768525723. The cubic root of 211306252 is about 595.6220709590.

Adding to 211306252 its reverse (252603112), we get a palindrome (463909364).

The spelling of 211306252 in words is "two hundred eleven million, three hundred six thousand, two hundred fifty-two".