13113503 has 16 divisors (see below), whose sum is σ = 14683200. Its totient is φ = 11632896.

The previous prime is 13113491. The next prime is 13113509. The reversal of 13113503 is 30531131.

It is a cyclic number.

It is not a de Polignac number, because 13113503 - 2¹² = 13109407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113509) 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, 65798 + ... + 65996.

It is an arithmetic number, because the mean of its divisors is an integer number (917700).

Almost surely, 2^13113503 is an apocalyptic number.

13113503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13113503 is a deficient number, since it is larger than the sum of its proper divisors (1569697).

13113503 is a wasteful number, since it uses less digits than its factorization.

13113503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386.

The product of its (nonzero) digits is 135, while the sum is 17.

The square root of 13113503 is about 3621.2571021677. The cubic root of 13113503 is about 235.8158035586.

Adding to 13113503 its reverse (30531131), we get a palindrome (43644634).

The spelling of 13113503 in words is "thirteen million, one hundred thirteen thousand, five hundred three".