11631213133 has 2 divisors, whose sum is σ = 11631213134. Its totient is φ = 11631213132.

The previous prime is 11631213073. The next prime is 11631213173. The reversal of 11631213133 is 33131213611.

11631213133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11591106244 + 40106889 = 107662^2 + 6333^2 .

It is an emirp because it is prime and its reverse (33131213611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11631213133 - 2²⁹ = 11094342221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11631213098 and 11631213107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11631213173) 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 as a sum of consecutive naturals, namely, 5815606566 + 5815606567.

It is an arithmetic number, because the mean of its divisors is an integer number (5815606567).

Almost surely, 2^11631213133 is an apocalyptic number.

It is an amenable number.

11631213133 is a deficient number, since it is larger than the sum of its proper divisors (1).

11631213133 is an equidigital number, since it uses as much as digits as its factorization.

11631213133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 25.

Adding to 11631213133 its reverse (33131213611), we get a palindrome (44762426744).

The spelling of 11631213133 in words is "eleven billion, six hundred thirty-one million, two hundred thirteen thousand, one hundred thirty-three".