1313440544413 has 4 divisors (see below), whose sum is σ = 1315189467328. Its totient is φ = 1311691621500.

The previous prime is 1313440544411. The next prime is 1313440544431. The reversal of 1313440544413 is 3144450443131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1313440544413 - 2¹ = 1313440544411 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 (1313440544411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 874460331 + ... + 874461832.

It is an arithmetic number, because the mean of its divisors is an integer number (328797366832).

Almost surely, 2^{1313440544413} is an apocalyptic number.

It is an amenable number.

1313440544413 is a deficient number, since it is larger than the sum of its proper divisors (1748922915).

1313440544413 is an equidigital number, since it uses as much as digits as its factorization.

1313440544413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748922914.

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 1313440544413 its reverse (3144450443131), we get a palindrome (4457890987544).

The spelling of 1313440544413 in words is "one trillion, three hundred thirteen billion, four hundred forty million, five hundred forty-four thousand, four hundred thirteen".