203111143411 has 12 divisors (see below), whose sum is σ = 225230115096. Its totient is φ = 183012441920.

The previous prime is 203111143373. The next prime is 203111143421. The reversal of 203111143411 is 114341111302.

It is not a de Polignac number, because 203111143411 - 2¹³ = 203111135219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203111143421) 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 11 ways as a sum of consecutive naturals, for example, 7413781 + ... + 7441126.

It is an arithmetic number, because the mean of its divisors is an integer number (18769176258).

Almost surely, 2^203111143411 is an apocalyptic number.

203111143411 is a deficient number, since it is larger than the sum of its proper divisors (22118971685).

203111143411 is a wasteful number, since it uses less digits than its factorization.

203111143411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14855042 (or 14855031 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 203111143411 its reverse (114341111302), we get a palindrome (317452254713).

The spelling of 203111143411 in words is "two hundred three billion, one hundred eleven million, one hundred forty-three thousand, four hundred eleven".