133111432213 has 4 divisors (see below), whose sum is σ = 133112322540. Its totient is φ = 133110541888.

The previous prime is 133111432211. The next prime is 133111432219. The reversal of 133111432213 is 312234111331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 312234111331 = 9923 ⋅31465697.

It can be written as a sum of positive squares in 2 ways, for example, as 80017134129 + 53094298084 = 282873^2 + 230422^2 .

It is a cyclic number.

It is not a de Polignac number, because 133111432213 - 2¹ = 133111432211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133111432211) 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, 160018 + ... + 540211.

It is an arithmetic number, because the mean of its divisors is an integer number (33278080635).

Almost surely, 2^133111432213 is an apocalyptic number.

It is an amenable number.

133111432213 is a deficient number, since it is larger than the sum of its proper divisors (890327).

133111432213 is an equidigital number, since it uses as much as digits as its factorization.

133111432213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890326.

The product of its digits is 1296, while the sum is 25.

Adding to 133111432213 its reverse (312234111331), we get a palindrome (445345543544).

The spelling of 133111432213 in words is "one hundred thirty-three billion, one hundred eleven million, four hundred thirty-two thousand, two hundred thirteen".