236123542133 has 4 divisors (see below), whose sum is σ = 236576754828. Its totient is φ = 235670329440.

The previous prime is 236123542129. The next prime is 236123542139. The reversal of 236123542133 is 331245321632.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33833187844 + 202290354289 = 183938^2 + 449767^2 .

It is a cyclic number.

It is not a de Polignac number, because 236123542133 - 2² = 236123542129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 236123542093 and 236123542102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (236123542139) 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, 226605566 + ... + 226606607.

It is an arithmetic number, because the mean of its divisors is an integer number (59144188707).

Almost surely, 2^236123542133 is an apocalyptic number.

It is an amenable number.

236123542133 is a deficient number, since it is larger than the sum of its proper divisors (453212695).

236123542133 is an equidigital number, since it uses as much as digits as its factorization.

236123542133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453212694.

The product of its digits is 77760, while the sum is 35.

Adding to 236123542133 its reverse (331245321632), we get a palindrome (567368863765).

The spelling of 236123542133 in words is "two hundred thirty-six billion, one hundred twenty-three million, five hundred forty-two thousand, one hundred thirty-three".