1311244132 has 12 divisors (see below), whose sum is σ = 2503284336. Its totient is φ = 596020040.

The previous prime is 1311244111. The next prime is 1311244199. The reversal of 1311244132 is 2314421131.

It is a super-2 number, since 2×1311244132² = 3438722347408866848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14900458 + ... + 14900545.

It is an arithmetic number, because the mean of its divisors is an integer number (208607028).

Almost surely, 2^1311244132 is an apocalyptic number.

It is an amenable number.

1311244132 is a deficient number, since it is larger than the sum of its proper divisors (1192040204).

1311244132 is a wasteful number, since it uses less digits than its factorization.

1311244132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29801018 (or 29801016 counting only the distinct ones).

The product of its digits is 576, while the sum is 22.

The square root of 1311244132 is about 36211.1050922227. The cubic root of 1311244132 is about 1094.5304609633.

Adding to 1311244132 its reverse (2314421131), we get a palindrome (3625665263).

The spelling of 1311244132 in words is "one billion, three hundred eleven million, two hundred forty-four thousand, one hundred thirty-two".