1131312212 has 24 divisors (see below), whose sum is σ = 2093128800. Its totient is φ = 533536416.

The previous prime is 1131312181. The next prime is 1131312229. The reversal of 1131312212 is 2122131311.

It is a congruent number.

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, 15098 + ... + 49905.

It is an arithmetic number, because the mean of its divisors is an integer number (87213700).

Almost surely, 2^1131312212 is an apocalyptic number.

It is an amenable number.

1131312212 is a deficient number, since it is larger than the sum of its proper divisors (961816588).

1131312212 is a wasteful number, since it uses less digits than its factorization.

1131312212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65255 (or 65253 counting only the distinct ones).

The product of its digits is 72, while the sum is 17.

The square root of 1131312212 is about 33634.9849412780. The cubic root of 1131312212 is about 1041.9834596176.

Adding to 1131312212 its reverse (2122131311), we get a palindrome (3253443523).

The spelling of 1131312212 in words is "one billion, one hundred thirty-one million, three hundred twelve thousand, two hundred twelve".