2231231211 has 16 divisors (see below), whose sum is σ = 3606030720. Its totient is φ = 1352261160.

The previous prime is 2231231179. The next prime is 2231231243. The reversal of 2231231211 is 1121321322.

2231231211 is a `hidden beast` number, since 223 + 1 + 231 + 211 = 666.

It is an interprime number because it is at equal distance from previous prime (2231231179) and next prime (2231231243).

It is not a de Polignac number, because 2231231211 - 2⁵ = 2231231179 is a prime.

It is a super-3 number, since 3×2231231211³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2231231251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3755985 + ... + 3756578.

It is an arithmetic number, because the mean of its divisors is an integer number (225376920).

Almost surely, 2^2231231211 is an apocalyptic number.

2231231211 is a deficient number, since it is larger than the sum of its proper divisors (1374799509).

2231231211 is a wasteful number, since it uses less digits than its factorization.

2231231211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7512583 (or 7512577 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 2231231211 is about 47235.9101849430. The cubic root of 2231231211 is about 1306.7169526395.

Adding to 2231231211 its reverse (1121321322), we get a palindrome (3352552533).

The spelling of 2231231211 in words is "two billion, two hundred thirty-one million, two hundred thirty-one thousand, two hundred eleven".