133303320 has 80 divisors (see below), whose sum is σ = 448058160. Its totient is φ = 35546688.

The previous prime is 133303279. The next prime is 133303337. The reversal of 133303320 is 23303331.

133303320 is a `hidden beast` number, since 1 + 3 + 330 + 332 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 133303293 and 133303302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17332 + ... + 23811.

It is an arithmetic number, because the mean of its divisors is an integer number (5600727).

Almost surely, 2^133303320 is an apocalyptic number.

133303320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133303320 is an abundant number, since it is smaller than the sum of its proper divisors (314754840).

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

133303320 is a wasteful number, since it uses less digits than its factorization.

133303320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41166 (or 41153 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 18.

The square root of 133303320 is about 11545.7056951925. The cubic root of 133303320 is about 510.8346195517.

Adding to 133303320 its reverse (23303331), we get a palindrome (156606651).

The spelling of 133303320 in words is "one hundred thirty-three million, three hundred three thousand, three hundred twenty".