211313252 has 6 divisors (see below), whose sum is σ = 369798198. Its totient is φ = 105656624.

The previous prime is 211313209. The next prime is 211313257. The reversal of 211313252 is 252313112.

It can be written as a sum of positive squares in only one way, i.e., 211295296 + 17956 = 14536^2 + 134^2 .

It is not an unprimeable number, because it can be changed into a prime (211313257) 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 as a sum of consecutive naturals, namely, 26414153 + ... + 26414160.

It is an arithmetic number, because the mean of its divisors is an integer number (61633033).

Almost surely, 2^211313252 is an apocalyptic number.

It is an amenable number.

211313252 is a deficient number, since it is larger than the sum of its proper divisors (158484946).

211313252 is a wasteful number, since it uses less digits than its factorization.

211313252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52828317 (or 52828315 counting only the distinct ones).

The product of its digits is 360, while the sum is 20.

The square root of 211313252 is about 14536.6176258441. The cubic root of 211313252 is about 595.6286479981.

Adding to 211313252 its reverse (252313112), we get a palindrome (463626364).

The spelling of 211313252 in words is "two hundred eleven million, three hundred thirteen thousand, two hundred fifty-two".