13530203 has 2 divisors, whose sum is σ = 13530204. Its totient is φ = 13530202.

The previous prime is 13530191. The next prime is 13530259. The reversal of 13530203 is 30203531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13530203 - 2²² = 9335899 is a prime.

It is not a weakly prime, because it can be changed into another prime (13533203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765101 + 6765102.

It is an arithmetic number, because the mean of its divisors is an integer number (6765102).

Almost surely, 2^13530203 is an apocalyptic number.

13530203 is a deficient number, since it is larger than the sum of its proper divisors (1).

13530203 is an equidigital number, since it uses as much as digits as its factorization.

13530203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 13530203 is about 3678.3424256042. The cubic root of 13530203 is about 238.2875969203.

Adding to 13530203 its reverse (30203531), we get a palindrome (43733734).

The spelling of 13530203 in words is "thirteen million, five hundred thirty thousand, two hundred three".