13530823 has 2 divisors, whose sum is σ = 13530824. Its totient is φ = 13530822.

The previous prime is 13530809. The next prime is 13530833. The reversal of 13530823 is 32803531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13530823 - 2⁹ = 13530311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13530833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765411 + 6765412.

It is an arithmetic number, because the mean of its divisors is an integer number (6765412).

Almost surely, 2^13530823 is an apocalyptic number.

13530823 is a deficient number, since it is larger than the sum of its proper divisors (1).

13530823 is an equidigital number, since it uses as much as digits as its factorization.

13530823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 13530823 is about 3678.4267017300. The cubic root of 13530823 is about 238.2912365812.

The spelling of 13530823 in words is "thirteen million, five hundred thirty thousand, eight hundred twenty-three".