11305203 has 16 divisors (see below), whose sum is σ = 18552576. Its totient is φ = 5963040.

The previous prime is 11305199. The next prime is 11305207. The reversal of 11305203 is 30250311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11305199) and next prime (11305207).

It is not a de Polignac number, because 11305203 - 2² = 11305199 is a prime.

It is a super-2 number, since 2×11305203² = 255615229742418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11305207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20433 + ... + 20978.

It is an arithmetic number, because the mean of its divisors is an integer number (1159536).

Almost surely, 2^11305203 is an apocalyptic number.

11305203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11305203 is a deficient number, since it is larger than the sum of its proper divisors (7247373).

11305203 is a wasteful number, since it uses less digits than its factorization.

11305203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41434.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 11305203 is about 3362.3210733064. The cubic root of 11305203 is about 224.4361387331.

Adding to 11305203 its reverse (30250311), we get a palindrome (41555514).

The spelling of 11305203 in words is "eleven million, three hundred five thousand, two hundred three".