1311321332 has 12 divisors (see below), whose sum is σ = 2297007300. Its totient is φ = 655033536.

The previous prime is 1311321311. The next prime is 1311321337. The reversal of 1311321332 is 2331231131.

It can be written as a sum of positive squares in 2 ways, for example, as 1275632656 + 35688676 = 35716^2 + 5974^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311321337) 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, 152063 + ... + 160454.

It is an arithmetic number, because the mean of its divisors is an integer number (191417275).

Almost surely, 2^1311321332 is an apocalyptic number.

It is an amenable number.

1311321332 is a deficient number, since it is larger than the sum of its proper divisors (985685968).

1311321332 is a wasteful number, since it uses less digits than its factorization.

1311321332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313570 (or 313568 counting only the distinct ones).

The product of its digits is 324, while the sum is 20.

The square root of 1311321332 is about 36212.1710478673. The cubic root of 1311321332 is about 1094.5519408417.

Adding to 1311321332 its reverse (2331231131), we get a palindrome (3642552463).

The spelling of 1311321332 in words is "one billion, three hundred eleven million, three hundred twenty-one thousand, three hundred thirty-two".