1313444311623 has 12 divisors (see below), whose sum is σ = 1908163799880. Its totient is φ = 870568097616.

The previous prime is 1313444311589. The next prime is 1313444311657. The reversal of 1313444311623 is 3261134443131.

1313444311623 is a `hidden beast` number, since 1 + 3 + 13 + 4 + 4 + 4 + 3 + 11 + 623 = 666.

It is an interprime number because it is at equal distance from previous prime (1313444311589) and next prime (1313444311657).

It is not a de Polignac number, because 1313444311623 - 2¹⁰ = 1313444310599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313444311523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 421785313 + ... + 421788426.

It is an arithmetic number, because the mean of its divisors is an integer number (159013649990).

Almost surely, 2^{1313444311623} is an apocalyptic number.

1313444311623 is a deficient number, since it is larger than the sum of its proper divisors (594719488257).

1313444311623 is a wasteful number, since it uses less digits than its factorization.

1313444311623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843573918 (or 843573915 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

Adding to 1313444311623 its reverse (3261134443131), we get a palindrome (4574578754754).

The spelling of 1313444311623 in words is "one trillion, three hundred thirteen billion, four hundred forty-four million, three hundred eleven thousand, six hundred twenty-three".