1231042312 has 16 divisors (see below), whose sum is σ = 2312145360. Its totient is φ = 614470224.

The previous prime is 1231042303. The next prime is 1231042327. The reversal of 1231042312 is 2132401321.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1231042312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126378 + ... + 135769.

It is an arithmetic number, because the mean of its divisors is an integer number (144509085).

Almost surely, 2^1231042312 is an apocalyptic number.

It is an amenable number.

1231042312 is a deficient number, since it is larger than the sum of its proper divisors (1081103048).

1231042312 is a wasteful number, since it uses less digits than its factorization.

1231042312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262740 (or 262736 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1231042312 is about 35086.2125627717. The cubic root of 1231042312 is about 1071.7438335894.

Adding to 1231042312 its reverse (2132401321), we get a palindrome (3363443633).

The spelling of 1231042312 in words is "one billion, two hundred thirty-one million, forty-two thousand, three hundred twelve".