331211132 has 72 divisors (see below), whose sum is σ = 706070400. Its totient is φ = 133122528.

The previous prime is 331211129. The next prime is 331211141. The reversal of 331211132 is 231112133.

It is a self number, because there is not a number n which added to its sum of digits gives 331211132.

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, 873719 + ... + 874097.

Almost surely, 2^331211132 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 331211132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353035200).

331211132 is an abundant number, since it is smaller than the sum of its proper divisors (374859268).

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

331211132 is a wasteful number, since it uses less digits than its factorization.

331211132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 470 counting only the distinct ones).

The product of its digits is 108, while the sum is 17.

The square root of 331211132 is about 18199.2069057967. The cubic root of 331211132 is about 691.8866883197.

Adding to 331211132 its reverse (231112133), we get a palindrome (562323265).

It can be divided in two parts, 3312 and 11132, that multiplied together give a square (36869184 = 6072²).

The spelling of 331211132 in words is "three hundred thirty-one million, two hundred eleven thousand, one hundred thirty-two".