2311131212 has 24 divisors (see below), whose sum is σ = 4358844000. Its totient is φ = 1065879936.

The previous prime is 2311131211. The next prime is 2311131271. The reversal of 2311131212 is 2121311132.

It is not an unprimeable number, because it can be changed into a prime (2311131211) 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, 56864 + ... + 88632.

It is an arithmetic number, because the mean of its divisors is an integer number (181618500).

Almost surely, 2^2311131212 is an apocalyptic number.

It is an amenable number.

2311131212 is a deficient number, since it is larger than the sum of its proper divisors (2047712788).

2311131212 is a wasteful number, since it uses less digits than its factorization.

2311131212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33185 (or 33183 counting only the distinct ones).

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

The square root of 2311131212 is about 48074.2260676134. The cubic root of 2311131212 is about 1322.1321548464.

Adding to 2311131212 its reverse (2121311132), we get a palindrome (4432442344).

The spelling of 2311131212 in words is "two billion, three hundred eleven million, one hundred thirty-one thousand, two hundred twelve".