12003513 has 16 divisors (see below), whose sum is σ = 17018496. Its totient is φ = 7499520.

The previous prime is 12003457. The next prime is 12003527. The reversal of 12003513 is 31530021.

It is a happy number.

It is not a de Polignac number, because 12003513 - 2⁶ = 12003449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12003492 and 12003501.

It is not an unprimeable number, because it can be changed into a prime (12003553) 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 15 ways as a sum of consecutive naturals, for example, 18708 + ... + 19338.

It is an arithmetic number, because the mean of its divisors is an integer number (1063656).

Almost surely, 2^12003513 is an apocalyptic number.

It is an amenable number.

12003513 is a deficient number, since it is larger than the sum of its proper divisors (5014983).

12003513 is a wasteful number, since it uses less digits than its factorization.

12003513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024.

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

The square root of 12003513 is about 3464.6086359068. The cubic root of 12003513 is about 228.9651873372.

Adding to 12003513 its reverse (31530021), we get a palindrome (43533534).

The spelling of 12003513 in words is "twelve million, three thousand, five hundred thirteen".