133303212 has 48 divisors (see below), whose sum is σ = 394974720. Its totient is φ = 38086416.

The previous prime is 133303211. The next prime is 133303217. The reversal of 133303212 is 212303331.

133303212 is a `hidden beast` number, since 13 + 330 + 321 + 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 (133303211) 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, 87408 + ... + 88919.

It is an arithmetic number, because the mean of its divisors is an integer number (8228640).

Almost surely, 2^133303212 is an apocalyptic number.

133303212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133303212 is an abundant number, since it is smaller than the sum of its proper divisors (261671508).

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

133303212 is a wasteful number, since it uses less digits than its factorization.

133303212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176347 (or 176339 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 133303212 is about 11545.7010181279. The cubic root of 133303212 is about 510.8344815953.

Adding to 133303212 its reverse (212303331), we get a palindrome (345606543).

The spelling of 133303212 in words is "one hundred thirty-three million, three hundred three thousand, two hundred twelve".