203310111011 has 24 divisors (see below), whose sum is σ = 240166080000. Its totient is φ = 171579464784.

The previous prime is 203310111001. The next prime is 203310111029. The reversal of 203310111011 is 110111013302.

It is a happy number.

203310111011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 203310111011 - 2¹⁸ = 203309848867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203310111001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1316540 + ... + 1462838.

It is an arithmetic number, because the mean of its divisors is an integer number (10006920000).

Almost surely, 2^203310111011 is an apocalyptic number.

203310111011 is a deficient number, since it is larger than the sum of its proper divisors (36855968989).

203310111011 is a wasteful number, since it uses less digits than its factorization.

203310111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146751 (or 146744 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 203310111011 its reverse (110111013302), we get a palindrome (313421124313).

The spelling of 203310111011 in words is "two hundred three billion, three hundred ten million, one hundred eleven thousand, eleven".