133144433311 has 4 divisors (see below), whose sum is σ = 133174759824. Its totient is φ = 133114106800.

The previous prime is 133144433309. The next prime is 133144433321. The reversal of 133144433311 is 113334441331.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 133144433311 - 2¹ = 133144433309 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133144433321) 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 3 ways as a sum of consecutive naturals, for example, 15156670 + ... + 15165451.

It is an arithmetic number, because the mean of its divisors is an integer number (33293689956).

Almost surely, 2^133144433311 is an apocalyptic number.

133144433311 is a deficient number, since it is larger than the sum of its proper divisors (30326513).

133144433311 is an equidigital number, since it uses as much as digits as its factorization.

133144433311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30326512.

The product of its digits is 15552, while the sum is 31.

Adding to 133144433311 its reverse (113334441331), we get a palindrome (246478874642).

The spelling of 133144433311 in words is "one hundred thirty-three billion, one hundred forty-four million, four hundred thirty-three thousand, three hundred eleven".