331224132 has 12 divisors (see below), whose sum is σ = 772856336. Its totient is φ = 110408040.

The previous prime is 331224121. The next prime is 331224137. The reversal of 331224132 is 231422133.

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

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 = 331224099 and 331224108.

It is not an unprimeable number, because it can be changed into a prime (331224137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13800994 + ... + 13801017.

Almost surely, 2^331224132 is an apocalyptic number.

It is an amenable number.

331224132 is an abundant number, since it is smaller than the sum of its proper divisors (441632204).

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

331224132 is a wasteful number, since it uses less digits than its factorization.

331224132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27602018 (or 27602016 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 331224132 is about 18199.5640607131. The cubic root of 331224132 is about 691.8957403597.

Adding to 331224132 its reverse (231422133), we get a palindrome (562646265).

The spelling of 331224132 in words is "three hundred thirty-one million, two hundred twenty-four thousand, one hundred thirty-two".