133101232 has 80 divisors (see below), whose sum is σ = 302123520. Its totient is φ = 56160000.

The previous prime is 133101217. The next prime is 133101233. The reversal of 133101232 is 232101331.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (133101233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176857 + ... + 177607.

It is an arithmetic number, because the mean of its divisors is an integer number (3776544).

Almost surely, 2^133101232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133101232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151061760).

133101232 is an abundant number, since it is smaller than the sum of its proper divisors (169022288).

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

133101232 is a wasteful number, since it uses less digits than its factorization.

133101232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 836 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 133101232 is about 11536.9507236531. The cubic root of 133101232 is about 510.5763470197.

Adding to 133101232 its reverse (232101331), we get a palindrome (365202563).

Subtracting 133101232 from its reverse (232101331), we obtain a palindrome (99000099).

The spelling of 133101232 in words is "one hundred thirty-three million, one hundred one thousand, two hundred thirty-two".