11500003 has 2 divisors, whose sum is σ = 11500004. Its totient is φ = 11500002.

The previous prime is 11500001. The next prime is 11500031. The reversal of 11500003 is 30000511.

It is a weak prime.

It is an emirp because it is prime and its reverse (30000511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11500003 - 2¹ = 11500001 is a prime.

Together with 11500001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11500001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5750001 + 5750002.

It is an arithmetic number, because the mean of its divisors is an integer number (5750002).

Almost surely, 2^11500003 is an apocalyptic number.

11500003 is a deficient number, since it is larger than the sum of its proper divisors (1).

11500003 is an equidigital number, since it uses as much as digits as its factorization.

11500003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15, while the sum is 10.

The square root of 11500003 is about 3391.1654338885. The cubic root of 11500003 is about 225.7178914013.

Adding to 11500003 its reverse (30000511), we get a palindrome (41500514).

The spelling of 11500003 in words is "eleven million, five hundred thousand, three".