133301232 has 120 divisors (see below), whose sum is σ = 388118016. Its totient is φ = 42674688.

The previous prime is 133301227. The next prime is 133301239. The reversal of 133301232 is 232103331.

133301232 is a `hidden beast` number, since 133 + 301 + 232 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133301239) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 676558 + ... + 676754.

Almost surely, 2^133301232 is an apocalyptic number.

133301232 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 133301232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194059008).

133301232 is an abundant number, since it is smaller than the sum of its proper divisors (254816784).

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

133301232 is a wasteful number, since it uses less digits than its factorization.

133301232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 133301232 is about 11545.6152716085. The cubic root of 133301232 is about 510.8319523807.

Adding to 133301232 its reverse (232103331), we get a palindrome (365404563).

The spelling of 133301232 in words is "one hundred thirty-three million, three hundred one thousand, two hundred thirty-two".