133333232 has 20 divisors (see below), whose sum is σ = 266667456. Its totient is φ = 64515840.

The previous prime is 133333229. The next prime is 133333253. The reversal of 133333232 is 232333331.

133333232 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 133333198 and 133333207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133913 + ... + 134904.

Almost surely, 2^133333232 is an apocalyptic number.

It is an amenable number.

133333232 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

133333232 is a wasteful number, since it uses less digits than its factorization.

133333232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268856 (or 268850 counting only the distinct ones).

The product of its digits is 2916, while the sum is 23.

The square root of 133333232 is about 11547.0009959296. Note that the first 3 decimals coincide. The cubic root of 133333232 is about 510.8728255079.

Subtracting from 133333232 its sum of digits (23), we obtain a square (133333209 = 11547²).

Adding to 133333232 its reverse (232333331), we get a palindrome (365666563).

Subtracting 133333232 from its reverse (232333331), we obtain a palindrome (99000099).

It can be divided in two parts, 1333332 and 32, that multiplied together give a palindrome (42666624).

The spelling of 133333232 in words is "one hundred thirty-three million, three hundred thirty-three thousand, two hundred thirty-two".