133212311131 has 4 divisors (see below), whose sum is σ = 133214637664. Its totient is φ = 133209984600.

The previous prime is 133212311129. The next prime is 133212311147. The reversal of 133212311131 is 131113212331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131113212331 = 83 ⋅1579677257.

It is a cyclic number.

It is not a de Polignac number, because 133212311131 - 2¹ = 133212311129 is a prime.

It is a super-2 number, since 2×133212311131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133212311731) 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, 1075155 + ... + 1192636.

It is an arithmetic number, because the mean of its divisors is an integer number (33303659416).

Almost surely, 2^133212311131 is an apocalyptic number.

133212311131 is a deficient number, since it is larger than the sum of its proper divisors (2326533).

133212311131 is an equidigital number, since it uses as much as digits as its factorization.

133212311131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326532.

The product of its digits is 324, while the sum is 22.

Adding to 133212311131 its reverse (131113212331), we get a palindrome (264325523462).

The spelling of 133212311131 in words is "one hundred thirty-three billion, two hundred twelve million, three hundred eleven thousand, one hundred thirty-one".