1311212311133 has 8 divisors (see below), whose sum is σ = 1403941802040. Its totient is φ = 1220216081920.

The previous prime is 1311212311121. The next prime is 1311212311141. The reversal of 1311212311133 is 3311132121131.

It can be written as a sum of positive squares in 4 ways, for example, as 203620245049 + 1107592066084 = 451243^2 + 1052422^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311212311133 - 2⁴ = 1311212311117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311212311099 and 1311212311108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311212311153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433313858 + ... + 433316883.

It is an arithmetic number, because the mean of its divisors is an integer number (175492725255).

Almost surely, 2^{1311212311133} is an apocalyptic number.

It is an amenable number.

1311212311133 is a deficient number, since it is larger than the sum of its proper divisors (92729490907).

1311212311133 is an equidigital number, since it uses as much as digits as its factorization.

1311212311133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866630847.

The product of its digits is 324, while the sum is 23.

Adding to 1311212311133 its reverse (3311132121131), we get a palindrome (4622344432264).

The spelling of 1311212311133 in words is "one trillion, three hundred eleven billion, two hundred twelve million, three hundred eleven thousand, one hundred thirty-three".