201031011103 has 16 divisors (see below), whose sum is σ = 216829831680. Its totient is φ = 185280256224.

The previous prime is 201031011073. The next prime is 201031011109. The reversal of 201031011103 is 301110130102.

It is a cyclic number.

It is not a de Polignac number, because 201031011103 - 2⁹ = 201031010591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201031011109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37094728 + ... + 37100146.

It is an arithmetic number, because the mean of its divisors is an integer number (13551864480).

Almost surely, 2^201031011103 is an apocalyptic number.

201031011103 is a deficient number, since it is larger than the sum of its proper divisors (15798820577).

201031011103 is a wasteful number, since it uses less digits than its factorization.

201031011103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9318.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 201031011103 its reverse (301110130102), we get a palindrome (502141141205).

The spelling of 201031011103 in words is "two hundred one billion, thirty-one million, eleven thousand, one hundred three".