2231311112 has 8 divisors (see below), whose sum is σ = 4183708350. Its totient is φ = 1115655552.

The previous prime is 2231311111. The next prime is 2231311139. The reversal of 2231311112 is 2111131322.

It can be written as a sum of positive squares in only one way, i.e., 1751087716 + 480223396 = 41846^2 + 21914^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×2231311112³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2231311111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139456937 + ... + 139456952.

Almost surely, 2^2231311112 is an apocalyptic number.

It is an amenable number.

2231311112 is a deficient number, since it is larger than the sum of its proper divisors (1952397238).

2231311112 is a wasteful number, since it uses less digits than its factorization.

2231311112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278913895 (or 278913891 counting only the distinct ones).

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

The square root of 2231311112 is about 47236.7559428037. The cubic root of 2231311112 is about 1306.7325504172.

Adding to 2231311112 its reverse (2111131322), we get a palindrome (4342442434).

The spelling of 2231311112 in words is "two billion, two hundred thirty-one million, three hundred eleven thousand, one hundred twelve".