203011311113 has 16 divisors (see below), whose sum is σ = 226658307456. Its totient is φ = 180621701760.

The previous prime is 203011311091. The next prime is 203011311121. The reversal of 203011311113 is 311113110302.

It is not a de Polignac number, because 203011311113 - 2⁸ = 203011310857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203011311091 and 203011311100.

It is not an unprimeable number, because it can be changed into a prime (203011311143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2250245 + ... + 2338722.

It is an arithmetic number, because the mean of its divisors is an integer number (14166144216).

Almost surely, 2^203011311113 is an apocalyptic number.

It is an amenable number.

203011311113 is a deficient number, since it is larger than the sum of its proper divisors (23646996343).

203011311113 is a wasteful number, since it uses less digits than its factorization.

203011311113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4589104.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 203011311113 its reverse (311113110302), we get a palindrome (514124421415).

The spelling of 203011311113 in words is "two hundred three billion, eleven million, three hundred eleven thousand, one hundred thirteen".