1321443332 has 48 divisors (see below), whose sum is σ = 2561836032. Its totient is φ = 591403680.

The previous prime is 1321443301. The next prime is 1321443353. The reversal of 1321443332 is 2333441231.

It is a super-3 number, since 3×1321443332³ (a number of 28 digits) contains 333 as substring.

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 15 ways as a sum of consecutive naturals, for example, 1778153 + ... + 1778895.

It is an arithmetic number, because the mean of its divisors is an integer number (53371584).

Almost surely, 2^1321443332 is an apocalyptic number.

It is an amenable number.

1321443332 is a deficient number, since it is larger than the sum of its proper divisors (1240392700).

1321443332 is a wasteful number, since it uses less digits than its factorization.

1321443332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328 (or 1326 counting only the distinct ones).

The product of its digits is 5184, while the sum is 26.

The square root of 1321443332 is about 36351.6620252775. The cubic root of 1321443332 is about 1097.3609828710.

Adding to 1321443332 its reverse (2333441231), we get a palindrome (3654884563).

The spelling of 1321443332 in words is "one billion, three hundred twenty-one million, four hundred forty-three thousand, three hundred thirty-two".