1311232132 has 48 divisors (see below), whose sum is σ = 2715148800. Its totient is φ = 542426112.

The previous prime is 1311232121. The next prime is 1311232163. The reversal of 1311232132 is 2312321131.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89244 + ... + 102892.

It is an arithmetic number, because the mean of its divisors is an integer number (56565600).

Almost surely, 2^1311232132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311232132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1357574400).

1311232132 is an abundant number, since it is smaller than the sum of its proper divisors (1403916668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311232132 is a wasteful number, since it uses less digits than its factorization.

1311232132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13780 (or 13778 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 1311232132 is about 36210.9393968176. The cubic root of 1311232132 is about 1094.5271220464.

Adding to 1311232132 its reverse (2312321131), we get a palindrome (3623553263).

The spelling of 1311232132 in words is "one billion, three hundred eleven million, two hundred thirty-two thousand, one hundred thirty-two".