133423212 has 24 divisors (see below), whose sum is σ = 335268976. Its totient is φ = 41053248.

The previous prime is 133423211. The next prime is 133423267. The reversal of 133423212 is 212324331.

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

It is not an unprimeable number, because it can be changed into a prime (133423211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427483 + ... + 427794.

Almost surely, 2^133423212 is an apocalyptic number.

133423212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133423212 is an abundant number, since it is smaller than the sum of its proper divisors (201845764).

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

133423212 is a wasteful number, since it uses less digits than its factorization.

133423212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855297 (or 855295 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 133423212 is about 11550.8965885770. The cubic root of 133423212 is about 510.9877205955.

Adding to 133423212 its reverse (212324331), we get a palindrome (345747543).

The spelling of 133423212 in words is "one hundred thirty-three million, four hundred twenty-three thousand, two hundred twelve".