132331521 has 8 divisors (see below), whose sum is σ = 201648064. Its totient is φ = 75618000.

The previous prime is 132331517. The next prime is 132331547. The reversal of 132331521 is 125133231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 132331521 - 2² = 132331517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 6301501 = 132331521 / (1 + 3 + 2 + 3 + 3 + 1 + 5 + 2 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (132331421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3150730 + ... + 3150771.

It is an arithmetic number, because the mean of its divisors is an integer number (25206008).

Almost surely, 2^132331521 is an apocalyptic number.

It is an amenable number.

132331521 is a deficient number, since it is larger than the sum of its proper divisors (69316543).

132331521 is an equidigital number, since it uses as much as digits as its factorization.

132331521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6301511.

The product of its digits is 540, while the sum is 21.

The square root of 132331521 is about 11503.5438452679. The cubic root of 132331521 is about 509.5902398778.

Adding to 132331521 its reverse (125133231), we get a palindrome (257464752).

The spelling of 132331521 in words is "one hundred thirty-two million, three hundred thirty-one thousand, five hundred twenty-one".