201131212 has 6 divisors (see below), whose sum is σ = 351979628. Its totient is φ = 100565604.

The previous prime is 201131209. The next prime is 201131219. The reversal of 201131212 is 212131102.

It is a junction number, because it is equal to n+sod(n) for n = 201131192 and 201131201.

It is not an unprimeable number, because it can be changed into a prime (201131219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25141398 + ... + 25141405.

Almost surely, 2^201131212 is an apocalyptic number.

It is an amenable number.

201131212 is a deficient number, since it is larger than the sum of its proper divisors (150848416).

201131212 is a wasteful number, since it uses less digits than its factorization.

201131212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50282807 (or 50282805 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 201131212 is about 14182.0736142498. The cubic root of 201131212 is about 585.9040367501.

Adding to 201131212 its reverse (212131102), we get a palindrome (413262314).

The spelling of 201131212 in words is "two hundred one million, one hundred thirty-one thousand, two hundred twelve".