132131321 has 4 divisors (see below), whose sum is σ = 151007232. Its totient is φ = 113255412.

The previous prime is 132131309. The next prime is 132131323. The reversal of 132131321 is 123131231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 123131231 = 43 ⋅2863517.

It is a cyclic number.

It is not a de Polignac number, because 132131321 - 2⁶ = 132131257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 132131321.

It is not an unprimeable number, because it can be changed into a prime (132131323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9437945 + ... + 9437958.

It is an arithmetic number, because the mean of its divisors is an integer number (37751808).

Almost surely, 2^132131321 is an apocalyptic number.

It is an amenable number.

132131321 is a deficient number, since it is larger than the sum of its proper divisors (18875911).

132131321 is an equidigital number, since it uses as much as digits as its factorization.

132131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18875910.

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

The square root of 132131321 is about 11494.8388853433. The cubic root of 132131321 is about 509.3331294124. Note that the first 3 decimals are identical.

Adding to 132131321 its reverse (123131231), we get a palindrome (255262552).

The spelling of 132131321 in words is "one hundred thirty-two million, one hundred thirty-one thousand, three hundred twenty-one".