133431322212 has 18 divisors (see below), whose sum is σ = 337284731238. Its totient is φ = 44477107392.

The previous prime is 133431322207. The next prime is 133431322223. The reversal of 133431322212 is 212223134331.

133431322212 is a `hidden beast` number, since 1 + 3 + 3 + 431 + 3 + 2 + 221 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 126781572096 + 6649750116 = 356064^2 + 81546^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1853212773 + ... + 1853212844.

Almost surely, 2^133431322212 is an apocalyptic number.

133431322212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133431322212 is an abundant number, since it is smaller than the sum of its proper divisors (203853409026).

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

133431322212 is a wasteful number, since it uses less digits than its factorization.

133431322212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706425627 (or 3706425622 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 133431322212 its reverse (212223134331), we get a palindrome (345654456543).

The spelling of 133431322212 in words is "one hundred thirty-three billion, four hundred thirty-one million, three hundred twenty-two thousand, two hundred twelve".