132331220 has 48 divisors (see below), whose sum is σ = 322092288. Its totient is φ = 44728320.

The previous prime is 132331217. The next prime is 132331237. The reversal of 132331220 is 22133231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3284 + ... + 16596.

It is an arithmetic number, because the mean of its divisors is an integer number (6710256).

Almost surely, 2^132331220 is an apocalyptic number.

132331220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 132331220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161046144).

132331220 is an abundant number, since it is smaller than the sum of its proper divisors (189761068).

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

132331220 is a wasteful number, since it uses less digits than its factorization.

132331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13400 (or 13398 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 132331220 is about 11503.5307623355. The cubic root of 132331220 is about 509.5898535078.

Adding to 132331220 its reverse (22133231), we get a palindrome (154464451).

The spelling of 132331220 in words is "one hundred thirty-two million, three hundred thirty-one thousand, two hundred twenty".