331680132 has 144 divisors (see below), whose sum is σ = 1023684480. Its totient is φ = 88390656.

The previous prime is 331680103. The next prime is 331680143. The reversal of 331680132 is 231086133.

It is a happy number.

It is a super-2 number, since 2×331680132² = 220023419927074848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331680096 and 331680105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 595198 + ... + 595754.

It is an arithmetic number, because the mean of its divisors is an integer number (7108920).

Almost surely, 2^331680132 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 331680132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (511842240).

331680132 is an abundant number, since it is smaller than the sum of its proper divisors (692004348).

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

331680132 is a wasteful number, since it uses less digits than its factorization.

331680132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730 (or 725 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 331680132 is about 18212.0875244987. The cubic root of 331680132 is about 692.2131083206.

The spelling of 331680132 in words is "three hundred thirty-one million, six hundred eighty thousand, one hundred thirty-two".