1311122311232 has 14 divisors (see below), whose sum is σ = 2601758336478. Its totient is φ = 655561155584.

The previous prime is 1311122311223. The next prime is 1311122311253. The reversal of 1311122311232 is 2321132211131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 771684943936 + 539437367296 = 878456^2 + 734464^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1311122311198 and 1311122311207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10243142993 + ... + 10243143120.

It is an arithmetic number, because the mean of its divisors is an integer number (185839881177).

Almost surely, 2^{1311122311232} is an apocalyptic number.

It is an amenable number.

1311122311232 is a deficient number, since it is larger than the sum of its proper divisors (1290636025246).

1311122311232 is an equidigital number, since it uses as much as digits as its factorization.

1311122311232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20486286125 (or 20486286115 counting only the distinct ones).

The product of its digits is 432, while the sum is 23.

Adding to 1311122311232 its reverse (2321132211131), we get a palindrome (3632254522363).

The spelling of 1311122311232 in words is "one trillion, three hundred eleven billion, one hundred twenty-two million, three hundred eleven thousand, two hundred thirty-two".