211257132 has 12 divisors (see below), whose sum is σ = 492933336. Its totient is φ = 70419040.

The previous prime is 211257131. The next prime is 211257187. The reversal of 211257132 is 231752112.

211257132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (211257131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8802369 + ... + 8802392.

It is an arithmetic number, because the mean of its divisors is an integer number (41077778).

Almost surely, 2^211257132 is an apocalyptic number.

It is an amenable number.

211257132 is an abundant number, since it is smaller than the sum of its proper divisors (281676204).

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

211257132 is a wasteful number, since it uses less digits than its factorization.

211257132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17604768 (or 17604766 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 211257132 is about 14534.6871999366. The cubic root of 211257132 is about 595.5759148496.

The spelling of 211257132 in words is "two hundred eleven million, two hundred fifty-seven thousand, one hundred thirty-two".