203103445011 has 8 divisors (see below), whose sum is σ = 270873288960. Its totient is φ = 135367948872.

The previous prime is 203103445009. The next prime is 203103445031. The reversal of 203103445011 is 110544301302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 203103445011 - 2¹ = 203103445009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203103445031) 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 7 ways as a sum of consecutive naturals, for example, 8573151 + ... + 8596808.

It is an arithmetic number, because the mean of its divisors is an integer number (33859161120).

Almost surely, 2^203103445011 is an apocalyptic number.

203103445011 is a deficient number, since it is larger than the sum of its proper divisors (67769843949).

203103445011 is a wasteful number, since it uses less digits than its factorization.

203103445011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17173905.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 203103445011 its reverse (110544301302), we get a palindrome (313647746313).

The spelling of 203103445011 in words is "two hundred three billion, one hundred three million, four hundred forty-five thousand, eleven".