1231240112 has 20 divisors (see below), whose sum is σ = 2389905816. Its totient is φ = 614490240.

The previous prime is 1231240111. The next prime is 1231240121. The reversal of 1231240112 is 2110421321.

It is a super-4 number, since 4×1231240112⁴ (a number of 37 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1231240111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61589 + ... + 79092.

Almost surely, 2^1231240112 is an apocalyptic number.

It is an amenable number.

1231240112 is a deficient number, since it is larger than the sum of its proper divisors (1158665704).

1231240112 is a wasteful number, since it uses less digits than its factorization.

1231240112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141236 (or 141230 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1231240112 is about 35089.0312205966. The cubic root of 1231240112 is about 1071.8012319895.

Adding to 1231240112 its reverse (2110421321), we get a palindrome (3341661433).

The spelling of 1231240112 in words is "one billion, two hundred thirty-one million, two hundred forty thousand, one hundred twelve".