13523315203 has 4 divisors (see below), whose sum is σ = 13523640408. Its totient is φ = 13522990000.

The previous prime is 13523315191. The next prime is 13523315231. The reversal of 13523315203 is 30251332531.

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 13523315203 - 2³³ = 4933380611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13523315233) 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, 89173 + ... + 187078.

It is an arithmetic number, because the mean of its divisors is an integer number (3380910102).

Almost surely, 2^13523315203 is an apocalyptic number.

13523315203 is a deficient number, since it is larger than the sum of its proper divisors (325205).

13523315203 is an equidigital number, since it uses as much as digits as its factorization.

13523315203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325204.

The product of its (nonzero) digits is 8100, while the sum is 28.

Adding to 13523315203 its reverse (30251332531), we get a palindrome (43774647734).

The spelling of 13523315203 in words is "thirteen billion, five hundred twenty-three million, three hundred fifteen thousand, two hundred three".