331132212 has 42 divisors (see below), whose sum is σ = 868832258. Its totient is φ = 110376432.

The previous prime is 331132211. The next prime is 331132229. The reversal of 331132212 is 212231133.

331132212 is a `hidden beast` number, since 331 + 1 + 322 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 230250276 + 100881936 = 15174^2 + 10044^2 .

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 not an unprimeable number, because it can be changed into a prime (331132211) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 53863 + ... + 59694.

Almost surely, 2^331132212 is an apocalyptic number.

It is an amenable number.

331132212 is an abundant number, since it is smaller than the sum of its proper divisors (537700046).

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

331132212 is a wasteful number, since it uses less digits than its factorization.

331132212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113579 (or 113562 counting only the distinct ones).

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

The square root of 331132212 is about 18197.0385502697. The cubic root of 331132212 is about 691.8317303894.

Adding to 331132212 its reverse (212231133), we get a palindrome (543363345).

The spelling of 331132212 in words is "three hundred thirty-one million, one hundred thirty-two thousand, two hundred twelve".