331122132 has 72 divisors (see below), whose sum is σ = 926033472. Its totient is φ = 98918400.

The previous prime is 331122083. The next prime is 331122149. The reversal of 331122132 is 231221133.

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 polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22228 + ... + 34004.

It is an arithmetic number, because the mean of its divisors is an integer number (12861576).

Almost surely, 2^331122132 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 331122132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463016736).

331122132 is an abundant number, since it is smaller than the sum of its proper divisors (594911340).

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

331122132 is a wasteful number, since it uses less digits than its factorization.

331122132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11869 (or 11864 counting only the distinct ones).

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

The square root of 331122132 is about 18196.7615800175. The cubic root of 331122132 is about 691.8247102986.

Adding to 331122132 its reverse (231221133), we get a palindrome (562343265).

Subtracting from 331122132 its reverse (231221133), we obtain a palindrome (99900999).

The spelling of 331122132 in words is "three hundred thirty-one million, one hundred twenty-two thousand, one hundred thirty-two".