20203021310311 has 24 divisors (see below), whose sum is σ = 24472931337504. Its totient is φ = 16335050734080.

The previous prime is 20203021310239. The next prime is 20203021310341. The reversal of 20203021310311 is 11301312030202.

It is not a de Polignac number, because 20203021310311 - 2⁷ = 20203021310183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203021310341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16567570 + ... + 17745151.

It is an arithmetic number, because the mean of its divisors is an integer number (1019705472396).

Almost surely, 2^{20203021310311} is an apocalyptic number.

20203021310311 is a deficient number, since it is larger than the sum of its proper divisors (4269910027193).

20203021310311 is a wasteful number, since it uses less digits than its factorization.

20203021310311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34312999 (or 34312980 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20203021310311 its reverse (11301312030202), we get a palindrome (31504333340513).

The spelling of 20203021310311 in words is "twenty trillion, two hundred three billion, twenty-one million, three hundred ten thousand, three hundred eleven".