13103203 has 4 divisors (see below), whose sum is σ = 13250520. Its totient is φ = 12955888.

The previous prime is 13103201. The next prime is 13103219. The reversal of 13103203 is 30230131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30230131 = 17 ⋅1778243.

It is a cyclic number.

It is not a de Polignac number, because 13103203 - 2¹ = 13103201 is a prime.

It is a super-4 number, since 4×13103203⁴ (a number of 30 digits) contains 4444 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (13103201) 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 in 3 ways as a sum of consecutive naturals, for example, 73525 + ... + 73702.

It is an arithmetic number, because the mean of its divisors is an integer number (3312630).

Almost surely, 2^13103203 is an apocalyptic number.

13103203 is a deficient number, since it is larger than the sum of its proper divisors (147317).

13103203 is an equidigital number, since it uses as much as digits as its factorization.

13103203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147316.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 13103203 is about 3619.8346647326. The cubic root of 13103203 is about 235.7540468848.

Adding to 13103203 its reverse (30230131), we get a palindrome (43333334).

The spelling of 13103203 in words is "thirteen million, one hundred three thousand, two hundred three".