1313203313123 has 16 divisors (see below), whose sum is σ = 1420225884000. Its totient is φ = 1207039864320.

The previous prime is 1313203313117. The next prime is 1313203313137. The reversal of 1313203313123 is 3213133023131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313203313123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313203313092 and 1313203313101.

It is not an unprimeable number, because it can be changed into a prime (1313203313423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62082353 + ... + 62103501.

It is an arithmetic number, because the mean of its divisors is an integer number (88764117750).

Almost surely, 2^{1313203313123} is an apocalyptic number.

1313203313123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1313203313123 is a deficient number, since it is larger than the sum of its proper divisors (107022570877).

1313203313123 is a wasteful number, since it uses less digits than its factorization.

1313203313123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41222.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 1313203313123 its reverse (3213133023131), we get a palindrome (4526336336254).

It can be divided in two parts, 131320 and 3313123, that added together give a palindrome (3444443).

The spelling of 1313203313123 in words is "one trillion, three hundred thirteen billion, two hundred three million, three hundred thirteen thousand, one hundred twenty-three".