13543042313 has 4 divisors (see below), whose sum is σ = 13548704148. Its totient is φ = 13537380480.

The previous prime is 13543042309. The next prime is 13543042343. The reversal of 13543042313 is 31324034531.

13543042313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3922767424 + 9620274889 = 62632^2 + 98083^2 .

It is a cyclic number.

It is not a de Polignac number, because 13543042313 - 2² = 13543042309 is a prime.

It is a super-4 number, since 4×13543042313⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13543042343) 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, 2827328 + ... + 2832113.

It is an arithmetic number, because the mean of its divisors is an integer number (3387176037).

Almost surely, 2^13543042313 is an apocalyptic number.

It is an amenable number.

13543042313 is a deficient number, since it is larger than the sum of its proper divisors (5661835).

13543042313 is an equidigital number, since it uses as much as digits as its factorization.

13543042313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5661834.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 13543042313 its reverse (31324034531), we get a palindrome (44867076844).

The spelling of 13543042313 in words is "thirteen billion, five hundred forty-three million, forty-two thousand, three hundred thirteen".