11003203513 has 2 divisors, whose sum is σ = 11003203514. Its totient is φ = 11003203512.

The previous prime is 11003203501. The next prime is 11003203531. The reversal of 11003203513 is 31530230011.

Together with next prime (11003203531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6249376809 + 4753826704 = 79053^2 + 68948^2 .

It is a cyclic number.

It is not a de Polignac number, because 11003203513 - 2¹³ = 11003195321 is a prime.

It is not a weakly prime, because it can be changed into another prime (11003209513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5501601756 + 5501601757.

It is an arithmetic number, because the mean of its divisors is an integer number (5501601757).

Almost surely, 2^11003203513 is an apocalyptic number.

It is an amenable number.

11003203513 is a deficient number, since it is larger than the sum of its proper divisors (1).

11003203513 is an equidigital number, since it uses as much as digits as its factorization.

11003203513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 19.

Adding to 11003203513 its reverse (31530230011), we get a palindrome (42533433524).

The spelling of 11003203513 in words is "eleven billion, three million, two hundred three thousand, five hundred thirteen".