1311132204 has 96 divisors (see below), whose sum is σ = 3580899840. Its totient is φ = 414051264.

The previous prime is 1311132203. The next prime is 1311132211. The reversal of 1311132204 is 4022311131.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1311132203) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 263322 + ... + 268254.

It is an arithmetic number, because the mean of its divisors is an integer number (37301040).

Almost surely, 2^1311132204 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 1311132204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1790449920).

1311132204 is an abundant number, since it is smaller than the sum of its proper divisors (2269767636).

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

1311132204 is a wasteful number, since it uses less digits than its factorization.

1311132204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076 (or 5068 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1311132204 is about 36209.5595665012. The cubic root of 1311132204 is about 1094.4993169812.

Adding to 1311132204 its reverse (4022311131), we get a palindrome (5333443335).

The spelling of 1311132204 in words is "one billion, three hundred eleven million, one hundred thirty-two thousand, two hundred four".