1231234112 has 56 divisors (see below), whose sum is σ = 2592406296. Its totient is φ = 578183168.

The previous prime is 1231234111. The next prime is 1231234117. The reversal of 1231234112 is 2114321321.

It can be written as a sum of positive squares in 4 ways, for example, as 162205696 + 1069028416 = 12736^2 + 32696^2 .

It is not an unprimeable number, because it can be changed into a prime (1231234111) 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, 709598 + ... + 711330.

Almost surely, 2^1231234112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231234112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1296203148).

1231234112 is an abundant number, since it is smaller than the sum of its proper divisors (1361172184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231234112 is a wasteful number, since it uses less digits than its factorization.

1231234112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2415 (or 2405 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 1231234112 is about 35088.9457236891. The cubic root of 1231234112 is about 1071.7994909757.

Adding to 1231234112 its reverse (2114321321), we get a palindrome (3345555433).

The spelling of 1231234112 in words is "one billion, two hundred thirty-one million, two hundred thirty-four thousand, one hundred twelve".