133312344 has 64 divisors (see below), whose sum is σ = 365091840. Its totient is φ = 40229760.

The previous prime is 133312343. The next prime is 133312357. The reversal of 133312344 is 443213331.

133312344 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133312343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72217 + ... + 74039.

It is an arithmetic number, because the mean of its divisors is an integer number (5704560).

Almost surely, 2^133312344 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 133312344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182545920).

133312344 is an abundant number, since it is smaller than the sum of its proper divisors (231779496).

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

133312344 is a wasteful number, since it uses less digits than its factorization.

133312344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120 (or 2116 counting only the distinct ones).

The product of its digits is 2592, while the sum is 24.

The square root of 133312344 is about 11546.0964832276. The cubic root of 133312344 is about 510.8461463154.

Adding to 133312344 its reverse (443213331), we get a palindrome (576525675).

The spelling of 133312344 in words is "one hundred thirty-three million, three hundred twelve thousand, three hundred forty-four".