2231331212 has 12 divisors (see below), whose sum is σ = 4259814216. Its totient is φ = 1014241440.

The previous prime is 2231331211. The next prime is 2231331227. The reversal of 2231331212 is 2121331322.

It is a super-3 number, since 3×2231331212³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2231331211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25355993 + ... + 25356080.

It is an arithmetic number, because the mean of its divisors is an integer number (354984518).

Almost surely, 2^2231331212 is an apocalyptic number.

2231331212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2231331212 is a deficient number, since it is larger than the sum of its proper divisors (2028483004).

2231331212 is a wasteful number, since it uses less digits than its factorization.

2231331212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50712088 (or 50712086 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 2231331212 is about 47236.9687003728. The cubic root of 2231331212 is about 1306.7364741559.

Adding to 2231331212 its reverse (2121331322), we get a palindrome (4352662534).

The spelling of 2231331212 in words is "two billion, two hundred thirty-one million, three hundred thirty-one thousand, two hundred twelve".