20203131030303 has 16 divisors (see below), whose sum is σ = 29442603510656. Its totient is φ = 12247133389920.

The previous prime is 20203131030217. The next prime is 20203131030347. The reversal of 20203131030303 is 30303013130202.

It is not a de Polignac number, because 20203131030303 - 2¹² = 20203131026207 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 20203131030303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203131030373) 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, 3865885453 + ... + 3865890678.

It is an arithmetic number, because the mean of its divisors is an integer number (1840162719416).

Almost surely, 2^{20203131030303} is an apocalyptic number.

20203131030303 is a deficient number, since it is larger than the sum of its proper divisors (9239472480353).

20203131030303 is a wasteful number, since it uses less digits than its factorization.

20203131030303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7731776214.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 20203131030303 its reverse (30303013130202), we get a palindrome (50506144160505).

The spelling of 20203131030303 in words is "twenty trillion, two hundred three billion, one hundred thirty-one million, thirty thousand, three hundred three".