11203013 has 2 divisors, whose sum is σ = 11203014. Its totient is φ = 11203012.

The previous prime is 11202991. The next prime is 11203033. The reversal of 11203013 is 31030211.

11203013 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9721924 + 1481089 = 3118^2 + 1217^2 .

It is a cyclic number.

It is not a de Polignac number, because 11203013 - 2¹² = 11198917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11202985 and 11203003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11203033) 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 as a sum of consecutive naturals, namely, 5601506 + 5601507.

It is an arithmetic number, because the mean of its divisors is an integer number (5601507).

Almost surely, 2^11203013 is an apocalyptic number.

It is an amenable number.

11203013 is a deficient number, since it is larger than the sum of its proper divisors (1).

11203013 is an equidigital number, since it uses as much as digits as its factorization.

11203013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 11203013 is about 3347.0902288406. The cubic root of 11203013 is about 223.7578497709.

Adding to 11203013 its reverse (31030211), we get a palindrome (42233224).

The spelling of 11203013 in words is "eleven million, two hundred three thousand, thirteen".