1332331321 has 4 divisors (see below), whose sum is σ = 1332547200. Its totient is φ = 1332115444.

The previous prime is 1332331313. The next prime is 1332331337. The reversal of 1332331321 is 1231332331.

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: 1231332331 = 2399 ⋅513269.

It is a cyclic number.

It is not a de Polignac number, because 1332331321 - 2³ = 1332331313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1332331292 and 1332331301.

It is not an unprimeable number, because it can be changed into a prime (1332331921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98401 + ... + 111118.

It is an arithmetic number, because the mean of its divisors is an integer number (333136800).

Almost surely, 2^1332331321 is an apocalyptic number.

It is an amenable number.

1332331321 is a deficient number, since it is larger than the sum of its proper divisors (215879).

1332331321 is an equidigital number, since it uses as much as digits as its factorization.

1332331321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215878.

The product of its digits is 972, while the sum is 22.

The square root of 1332331321 is about 36501.1139693024. The cubic root of 1332331321 is about 1100.3666328831.

Adding to 1332331321 its reverse (1231332331), we get a palindrome (2563663652).

It can be divided in two parts, 13323 and 31321, that added together give a palindrome (44644).

The spelling of 1332331321 in words is "one billion, three hundred thirty-two million, three hundred thirty-one thousand, three hundred twenty-one".