133331320 has 16 divisors (see below), whose sum is σ = 299995560. Its totient is φ = 53332512.

The previous prime is 133331291. The next prime is 133331321. The reversal of 133331320 is 23133331.

133331320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133331321) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1666602 + ... + 1666681.

Almost surely, 2^133331320 is an apocalyptic number.

133331320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133331320 is an abundant number, since it is smaller than the sum of its proper divisors (166664240).

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

133331320 is a wasteful number, since it uses less digits than its factorization.

133331320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333294 (or 3333290 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 19.

The square root of 133331320 is about 11546.9182035728. The cubic root of 133331320 is about 510.8703835222.

Adding to 133331320 its reverse (23133331), we get a palindrome (156464651).

It can be divided in two parts, 13 and 3331320, that added together give a palindrome (3331333).

The spelling of 133331320 in words is "one hundred thirty-three million, three hundred thirty-one thousand, three hundred twenty".