13111303203 has 24 divisors (see below), whose sum is σ = 20243976480. Its totient is φ = 8156903040.

The previous prime is 13111303199. The next prime is 13111303207. The reversal of 13111303203 is 30230311131.

It is a happy number.

13111303203 is a `hidden beast` number, since 1 + 311 + 1 + 30 + 320 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (13111303199) and next prime (13111303207).

It is not a de Polignac number, because 13111303203 - 2² = 13111303199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13111303207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 763948 + ... + 780921.

It is an arithmetic number, because the mean of its divisors is an integer number (843499020).

Almost surely, 2^13111303203 is an apocalyptic number.

13111303203 is a deficient number, since it is larger than the sum of its proper divisors (7132673277).

13111303203 is a wasteful number, since it uses less digits than its factorization.

13111303203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1544939 (or 1544936 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 13111303203 its reverse (30230311131), we get a palindrome (43341614334).

The spelling of 13111303203 in words is "thirteen billion, one hundred eleven million, three hundred three thousand, two hundred three".