133312020 has 48 divisors (see below), whose sum is σ = 374649408. Its totient is φ = 35418880.

The previous prime is 133311991. The next prime is 133312051. The reversal of 133312020 is 20213331.

133312020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12907 + ... + 20813.

It is an arithmetic number, because the mean of its divisors is an integer number (7805196).

Almost surely, 2^133312020 is an apocalyptic number.

133312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133312020 is an abundant number, since it is smaller than the sum of its proper divisors (241337388).

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

133312020 is a wasteful number, since it uses less digits than its factorization.

133312020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8200 (or 8198 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 133312020 is about 11546.0824525031. The cubic root of 133312020 is about 510.8457324645.

Adding to 133312020 its reverse (20213331), we get a palindrome (153525351).

It can be divided in two parts, 13331 and 2020, that added together give a palindrome (15351).

The spelling of 133312020 in words is "one hundred thirty-three million, three hundred twelve thousand, twenty".