133231332 has 24 divisors (see below), whose sum is σ = 334786816. Its totient is φ = 40994208.

The previous prime is 133231327. The next prime is 133231349. The reversal of 133231332 is 233132331.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 133231299 and 133231308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426868 + ... + 427179.

Almost surely, 2^133231332 is an apocalyptic number.

133231332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133231332 is an abundant number, since it is smaller than the sum of its proper divisors (201555484).

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

133231332 is a wasteful number, since it uses less digits than its factorization.

133231332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854067 (or 854065 counting only the distinct ones).

The product of its digits is 972, while the sum is 21.

The square root of 133231332 is about 11542.5877514533. The cubic root of 133231332 is about 510.7426473881.

Adding to 133231332 its reverse (233132331), we get a palindrome (366363663).

Subtracting 133231332 from its reverse (233132331), we obtain a palindrome (99900999).

The spelling of 133231332 in words is "one hundred thirty-three million, two hundred thirty-one thousand, three hundred thirty-two".