133423303356 has 336 divisors, whose sum is σ = 435703027200. Its totient is φ = 34866308736.

The previous prime is 133423303313. The next prime is 133423303361. The reversal of 133423303356 is 653303324331.

133423303356 is a `hidden beast` number, since 1 + 3 + 342 + 3 + 303 + 3 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 133423303356.

It is a congruent number.

It is an unprimeable number.

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 111 ways as a sum of consecutive naturals, for example, 11241081 + ... + 11252943.

It is an arithmetic number, because the mean of its divisors is an integer number (1296735200).

Almost surely, 2^133423303356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133423303356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217851513600).

133423303356 is an abundant number, since it is smaller than the sum of its proper divisors (302279723844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133423303356 is a wasteful number, since it uses less digits than its factorization.

133423303356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11940 (or 11923 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 36.

Adding to 133423303356 its reverse (653303324331), we get a palindrome (786726627687).

The spelling of 133423303356 in words is "one hundred thirty-three billion, four hundred twenty-three million, three hundred three thousand, three hundred fifty-six".