133403112 has 96 divisors (see below), whose sum is σ = 377875680. Its totient is φ = 44089920.

The previous prime is 133403089. The next prime is 133403117. The reversal of 133403112 is 211304331.

133403112 is a `hidden beast` number, since 13 + 340 + 311 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (133403117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 316662 + ... + 317082.

It is an arithmetic number, because the mean of its divisors is an integer number (3936205).

Almost surely, 2^133403112 is an apocalyptic number.

133403112 is a gapful number since it is divisible by the number (12) 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 133403112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188937840).

133403112 is an abundant number, since it is smaller than the sum of its proper divisors (244472568).

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

133403112 is a wasteful number, since it uses less digits than its factorization.

133403112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 133403112 is about 11550.0264934761. The cubic root of 133403112 is about 510.9620594709.

Adding to 133403112 its reverse (211304331), we get a palindrome (344707443).

The spelling of 133403112 in words is "one hundred thirty-three million, four hundred three thousand, one hundred twelve".