11909031133 has 2 divisors, whose sum is σ = 11909031134. Its totient is φ = 11909031132.

The previous prime is 11909031107. The next prime is 11909031139. The reversal of 11909031133 is 33113090911.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10908131364 + 1000899769 = 104442^2 + 31637^2 .

It is a cyclic number.

It is not a de Polignac number, because 11909031133 - 2¹³ = 11909022941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11909031095 and 11909031104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11909031139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5954515566 + 5954515567.

It is an arithmetic number, because the mean of its divisors is an integer number (5954515567).

Almost surely, 2^11909031133 is an apocalyptic number.

It is an amenable number.

11909031133 is a deficient number, since it is larger than the sum of its proper divisors (1).

11909031133 is an equidigital number, since it uses as much as digits as its factorization.

11909031133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2187, while the sum is 31.

The spelling of 11909031133 in words is "eleven billion, nine hundred nine million, thirty-one thousand, one hundred thirty-three".