212331132 has 60 divisors (see below), whose sum is σ = 597785496. Its totient is φ = 65331360.

The previous prime is 212331089. The next prime is 212331151. The reversal of 212331132 is 231133212.

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

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20994 + ... + 29417.

Almost surely, 2^212331132 is an apocalyptic number.

It is an amenable number.

212331132 is an abundant number, since it is smaller than the sum of its proper divisors (385454364).

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

212331132 is a wasteful number, since it uses less digits than its factorization.

212331132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50440 (or 50429 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 212331132 is about 14571.5864613295. The cubic root of 212331132 is about 596.5834826071.

Adding to 212331132 its reverse (231133212), we get a palindrome (443464344).

The spelling of 212331132 in words is "two hundred twelve million, three hundred thirty-one thousand, one hundred thirty-two".