11013430503 has 32 divisors (see below), whose sum is σ = 15709075200. Its totient is φ = 6843108096.

The previous prime is 11013430387. The next prime is 11013430553. The reversal of 11013430503 is 30503431011.

It is not a de Polignac number, because 11013430503 - 2¹⁸ = 11013168359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11013430503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11013430553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1740301 + ... + 1746617.

It is an arithmetic number, because the mean of its divisors is an integer number (490908600).

Almost surely, 2^11013430503 is an apocalyptic number.

11013430503 is a deficient number, since it is larger than the sum of its proper divisors (4695644697).

11013430503 is a wasteful number, since it uses less digits than its factorization.

11013430503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6831.

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 11013430503 its reverse (30503431011), we get a palindrome (41516861514).

The spelling of 11013430503 in words is "eleven billion, thirteen million, four hundred thirty thousand, five hundred three".