203102231311 has 16 divisors (see below), whose sum is σ = 240104816640. Its totient is φ = 168120095040.

The previous prime is 203102231273. The next prime is 203102231333. The reversal of 203102231311 is 113132201302.

It is a cyclic number.

It is not a de Polignac number, because 203102231311 - 2⁷ = 203102231183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203102231711) 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, 873046 + ... + 1080931.

It is an arithmetic number, because the mean of its divisors is an integer number (15006551040).

Almost surely, 2^203102231311 is an apocalyptic number.

203102231311 is a deficient number, since it is larger than the sum of its proper divisors (37002585329).

203102231311 is a wasteful number, since it uses less digits than its factorization.

203102231311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954494.

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

Adding to 203102231311 its reverse (113132201302), we get a palindrome (316234432613).

The spelling of 203102231311 in words is "two hundred three billion, one hundred two million, two hundred thirty-one thousand, three hundred eleven".