133311033020 has 96 divisors (see below), whose sum is σ = 309570992640. Its totient is φ = 47819715840.

The previous prime is 133311032999. The next prime is 133311033047. The reversal of 133311033020 is 20330113331.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 133311032983 and 133311033001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4787177 + ... + 4814943.

It is an arithmetic number, because the mean of its divisors is an integer number (3224697840).

Almost surely, 2^133311033020 is an apocalyptic number.

133311033020 is a gapful number since it is divisible by the number (10) 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 133311033020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154785496320).

133311033020 is an abundant number, since it is smaller than the sum of its proper divisors (176259959620).

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

133311033020 is a wasteful number, since it uses less digits than its factorization.

133311033020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28083 (or 28081 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 133311033020 its reverse (20330113331), we get a palindrome (153641146351).

The spelling of 133311033020 in words is "one hundred thirty-three billion, three hundred eleven million, thirty-three thousand, twenty".