31211302030203 has 16 divisors (see below), whose sum is σ = 43377708465920. Its totient is φ = 19943002179936.

The previous prime is 31211302030177. The next prime is 31211302030219. The reversal of 31211302030203 is 30203020311213.

It is not a de Polignac number, because 31211302030203 - 2²⁸ = 31211033594747 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 31211302030203.

It is not an unprimeable number, because it can be changed into a prime (31211302030003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2098372423 + ... + 2098387296.

It is an arithmetic number, because the mean of its divisors is an integer number (2711106779120).

Almost surely, 2^{31211302030203} is an apocalyptic number.

31211302030203 is a deficient number, since it is larger than the sum of its proper divisors (12166406435717).

31211302030203 is a wasteful number, since it uses less digits than its factorization.

31211302030203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4196759826.

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

Adding to 31211302030203 its reverse (30203020311213), we get a palindrome (61414322341416).

The spelling of 31211302030203 in words is "thirty-one trillion, two hundred eleven billion, three hundred two million, thirty thousand, two hundred three".