133011031200 has 144 divisors (see below), whose sum is σ = 434562498720. Its totient is φ = 35337579520.

The previous prime is 133011031169. The next prime is 133011031211. The reversal of 133011031200 is 2130110331.

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

It is a self number, because there is not a number n which added to its sum of digits gives 133011031200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 542587 + ... + 748613.

It is an arithmetic number, because the mean of its divisors is an integer number (3017795130).

Almost surely, 2^133011031200 is an apocalyptic number.

133011031200 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 133011031200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217281249360).

133011031200 is an abundant number, since it is smaller than the sum of its proper divisors (301551467520).

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

133011031200 is a wasteful number, since it uses less digits than its factorization.

133011031200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206319 (or 206306 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 133011031200 its reverse (2130110331), we get a palindrome (135141141531).

The spelling of 133011031200 in words is "one hundred thirty-three billion, eleven million, thirty-one thousand, two hundred".