133044312 has 128 divisors (see below), whose sum is σ = 371312640. Its totient is φ = 39536640.

The previous prime is 133044299. The next prime is 133044313. The reversal of 133044312 is 213440331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133044313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 847338 + ... + 847494.

It is an arithmetic number, because the mean of its divisors is an integer number (2900880).

Almost surely, 2^133044312 is an apocalyptic number.

133044312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133044312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185656320).

133044312 is an abundant number, since it is smaller than the sum of its proper divisors (238268328).

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

133044312 is a wasteful number, since it uses less digits than its factorization.

133044312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 133044312 is about 11534.4836035256. The cubic root of 133044312 is about 510.5035549326.

Adding to 133044312 its reverse (213440331), we get a palindrome (346484643).

The spelling of 133044312 in words is "one hundred thirty-three million, forty-four thousand, three hundred twelve".