1311133201333 has 4 divisors (see below), whose sum is σ = 1311144271180. Its totient is φ = 1311122131488.

The previous prime is 1311133201309. The next prime is 1311133201351. The reversal of 1311133201333 is 3331023311131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 566945749764 + 744187451569 = 752958^2 + 862663^2 .

It is a cyclic number.

It is not a de Polignac number, because 1311133201333 - 2¹³ = 1311133193141 is a prime.

It is a super-2 number, since 2×1311133201333² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311133201298 and 1311133201307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311133201373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5355318 + ... + 5594791.

It is an arithmetic number, because the mean of its divisors is an integer number (327786067795).

Almost surely, 2^{1311133201333} is an apocalyptic number.

It is an amenable number.

1311133201333 is a deficient number, since it is larger than the sum of its proper divisors (11069847).

1311133201333 is a wasteful number, since it uses less digits than its factorization.

1311133201333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11069846.

The product of its (nonzero) digits is 1458, while the sum is 25.

Adding to 1311133201333 its reverse (3331023311131), we get a palindrome (4642156512464).

The spelling of 1311133201333 in words is "one trillion, three hundred eleven billion, one hundred thirty-three million, two hundred one thousand, three hundred thirty-three".