13543723 has 2 divisors, whose sum is σ = 13543724. Its totient is φ = 13543722.

The previous prime is 13543721. The next prime is 13543727. The reversal of 13543723 is 32734531.

It is a weak prime.

It is an emirp because it is prime and its reverse (32734531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13543723 - 2¹ = 13543721 is a prime.

Together with 13543721, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 13543691 and 13543700.

It is not a weakly prime, because it can be changed into another prime (13543721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6771861 + 6771862.

It is an arithmetic number, because the mean of its divisors is an integer number (6771862).

Almost surely, 2^13543723 is an apocalyptic number.

13543723 is a deficient number, since it is larger than the sum of its proper divisors (1).

13543723 is an equidigital number, since it uses as much as digits as its factorization.

13543723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 28.

The square root of 13543723 is about 3680.1797510448. The cubic root of 13543723 is about 238.3669398006.

It can be divided in two parts, 135437 and 23, that added together give a triangular number (135460 = T₅₂₀).

The spelling of 13543723 in words is "thirteen million, five hundred forty-three thousand, seven hundred twenty-three".