1312321023103 has 4 divisors (see below), whose sum is σ = 1312741507168. Its totient is φ = 1311900539040.

The previous prime is 1312321023043. The next prime is 1312321023107. The reversal of 1312321023103 is 3013201232131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312321023103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312321023107) 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 3 ways as a sum of consecutive naturals, for example, 210237351 + ... + 210243592.

It is an arithmetic number, because the mean of its divisors is an integer number (328185376792).

Almost surely, 2^{1312321023103} is an apocalyptic number.

1312321023103 is a deficient number, since it is larger than the sum of its proper divisors (420484065).

1312321023103 is an equidigital number, since it uses as much as digits as its factorization.

1312321023103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420484064.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1312321023103 its reverse (3013201232131), we get a palindrome (4325522255234).

The spelling of 1312321023103 in words is "one trillion, three hundred twelve billion, three hundred twenty-one million, twenty-three thousand, one hundred three".