1312440112 has 20 divisors (see below), whose sum is σ = 2578669776. Its totient is φ = 646976960.

The previous prime is 1312440091. The next prime is 1312440121. The reversal of 1312440112 is 2110442131.

It is a self number, because there is not a number n which added to its sum of digits gives 1312440112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576523 + ... + 578794.

Almost surely, 2^1312440112 is an apocalyptic number.

It is an amenable number.

1312440112 is a deficient number, since it is larger than the sum of its proper divisors (1266229664).

1312440112 is a wasteful number, since it uses less digits than its factorization.

1312440112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155396 (or 1155390 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1312440112 is about 36227.6153231206. The cubic root of 1312440112 is about 1094.8631319795.

Adding to 1312440112 its reverse (2110442131), we get a palindrome (3422882243).

The spelling of 1312440112 in words is "one billion, three hundred twelve million, four hundred forty thousand, one hundred twelve".