1312303112103 has 16 divisors (see below), whose sum is σ = 1757739937536. Its totient is φ = 870876021120.

The previous prime is 1312303112083. The next prime is 1312303112171. The reversal of 1312303112103 is 3012113032131.

It is a happy number.

It is not a de Polignac number, because 1312303112103 - 2¹⁰ = 1312303111079 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1312303112103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312303112203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445603 + ... + 1680228.

It is an arithmetic number, because the mean of its divisors is an integer number (109858746096).

Almost surely, 2^{1312303112103} is an apocalyptic number.

1312303112103 is a deficient number, since it is larger than the sum of its proper divisors (445436825433).

1312303112103 is a wasteful number, since it uses less digits than its factorization.

1312303112103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126774.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1312303112103 its reverse (3012113032131), we get a palindrome (4324416144234).

The spelling of 1312303112103 in words is "one trillion, three hundred twelve billion, three hundred three million, one hundred twelve thousand, one hundred three".