1311011043232 has 96 divisors (see below), whose sum is σ = 2830372554240. Its totient is φ = 592814027520.

The previous prime is 1311011043227. The next prime is 1311011043239. The reversal of 1311011043232 is 2323401101131.

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

It is not an unprimeable number, because it can be changed into a prime (1311011043239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68404083 + ... + 68423245.

It is an arithmetic number, because the mean of its divisors is an integer number (29483047440).

Almost surely, 2^{1311011043232} 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 1311011043232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1415186277120).

1311011043232 is an abundant number, since it is smaller than the sum of its proper divisors (1519361511008).

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

1311011043232 is a wasteful number, since it uses less digits than its factorization.

1311011043232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20186 (or 20178 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1311011043232 its reverse (2323401101131), we get a palindrome (3634412144363).

The spelling of 1311011043232 in words is "one trillion, three hundred eleven billion, eleven million, forty-three thousand, two hundred thirty-two".