1313401226563 has 4 divisors (see below), whose sum is σ = 1313932325368. Its totient is φ = 1312870127760.

The previous prime is 1313401226551. The next prime is 1313401226573. The reversal of 1313401226563 is 3656221043131.

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

It is a cyclic number.

It is not a de Polignac number, because 1313401226563 - 2⁹ = 1313401226051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313401226573) 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 3 ways as a sum of consecutive naturals, for example, 265545693 + ... + 265550638.

It is an arithmetic number, because the mean of its divisors is an integer number (328483081342).

Almost surely, 2^{1313401226563} is an apocalyptic number.

1313401226563 is a deficient number, since it is larger than the sum of its proper divisors (531098805).

1313401226563 is an equidigital number, since it uses as much as digits as its factorization.

1313401226563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531098804.

The product of its (nonzero) digits is 77760, while the sum is 37.

Adding to 1313401226563 its reverse (3656221043131), we get a palindrome (4969622269694).

The spelling of 1313401226563 in words is "one trillion, three hundred thirteen billion, four hundred one million, two hundred twenty-six thousand, five hundred sixty-three".