1312113013243 has 8 divisors (see below), whose sum is σ = 1328269275648. Its totient is φ = 1295965028904.

The previous prime is 1312113013147. The next prime is 1312113013279. The reversal of 1312113013243 is 3423103112131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312113013243 - 2⁹ = 1312113012731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312113013543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1750255 + ... + 2384872.

It is an arithmetic number, because the mean of its divisors is an integer number (166033659456).

Almost surely, 2^{1312113013243} is an apocalyptic number.

1312113013243 is a deficient number, since it is larger than the sum of its proper divisors (16156262405).

1312113013243 is an equidigital number, since it uses as much as digits as its factorization.

1312113013243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139033.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 1312113013243 its reverse (3423103112131), we get a palindrome (4735216125374).

The spelling of 1312113013243 in words is "one trillion, three hundred twelve billion, one hundred thirteen million, thirteen thousand, two hundred forty-three".