133901312 has 44 divisors (see below), whose sum is σ = 273986856. Its totient is φ = 65372160.

The previous prime is 133901297. The next prime is 133901321. The reversal of 133901312 is 213109331.

It is a super-2 number, since 2×133901312² = 35859122710642688, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42512 + ... + 45552.

It is an arithmetic number, because the mean of its divisors is an integer number (6226974).

Almost surely, 2^133901312 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 133901312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136993428).

133901312 is an abundant number, since it is smaller than the sum of its proper divisors (140085544).

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

133901312 is an equidigital number, since it uses as much as digits as its factorization.

133901312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3104 (or 3086 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 133901312 is about 11571.5734453012. The cubic root of 133901312 is about 511.5973396624.

The spelling of 133901312 in words is "one hundred thirty-three million, nine hundred one thousand, three hundred twelve".