2031221303103 has 16 divisors (see below), whose sum is σ = 2718296050400. Its totient is φ = 1349153449344.

The previous prime is 2031221303099. The next prime is 2031221303113. The reversal of 2031221303103 is 3013031221302.

It is not a de Polignac number, because 2031221303103 - 2² = 2031221303099 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2031221303103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031221303113) 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, 470325 + ... + 2069697.

It is an arithmetic number, because the mean of its divisors is an integer number (169893503150).

Almost surely, 2^{2031221303103} is an apocalyptic number.

2031221303103 is a deficient number, since it is larger than the sum of its proper divisors (687074747297).

2031221303103 is a wasteful number, since it uses less digits than its factorization.

2031221303103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600938.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 2031221303103 its reverse (3013031221302), we get a palindrome (5044252524405).

The spelling of 2031221303103 in words is "two trillion, thirty-one billion, two hundred twenty-one million, three hundred three thousand, one hundred three".