13111403203 has 4 divisors (see below), whose sum is σ = 13113014440. Its totient is φ = 13109791968.

The previous prime is 13111403189. The next prime is 13111403273. The reversal of 13111403203 is 30230411131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13111403203 - 2⁹ = 13111402691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13111403273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793350 + ... + 809707.

It is an arithmetic number, because the mean of its divisors is an integer number (3278253610).

Almost surely, 2^13111403203 is an apocalyptic number.

13111403203 is a deficient number, since it is larger than the sum of its proper divisors (1611237).

13111403203 is an equidigital number, since it uses as much as digits as its factorization.

13111403203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611236.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13111403203 its reverse (30230411131), we get a palindrome (43341814334).

The spelling of 13111403203 in words is "thirteen billion, one hundred eleven million, four hundred three thousand, two hundred three".