211231632 has 80 divisors (see below), whose sum is σ = 577427328. Its totient is φ = 66401280.

The previous prime is 211231591. The next prime is 211231633. The reversal of 211231632 is 236132112.

211231632 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 211231599 and 211231608.

It is not an unprimeable number, because it can be changed into a prime (211231633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79282 + ... + 81902.

Almost surely, 2^211231632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211231632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288713664).

211231632 is an abundant number, since it is smaller than the sum of its proper divisors (366195696).

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

211231632 is a wasteful number, since it uses less digits than its factorization.

211231632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728 (or 2722 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 211231632 is about 14533.8099616033. The cubic root of 211231632 is about 595.5519506931.

Adding to 211231632 its reverse (236132112), we get a palindrome (447363744).

The spelling of 211231632 in words is "two hundred eleven million, two hundred thirty-one thousand, six hundred thirty-two".