20203143111 has 12 divisors (see below), whose sum is σ = 30898924992. Its totient is φ = 12676481856.

The previous prime is 20203143097. The next prime is 20203143173. The reversal of 20203143111 is 11134130202.

20203143111 is a `hidden beast` number, since 20 + 20 + 314 + 311 + 1 = 666.

It is not a de Polignac number, because 20203143111 - 2¹⁹ = 20202618823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203143011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66023191 + ... + 66023496.

It is an arithmetic number, because the mean of its divisors is an integer number (2574910416).

Almost surely, 2^20203143111 is an apocalyptic number.

20203143111 is a deficient number, since it is larger than the sum of its proper divisors (10695781881).

20203143111 is a wasteful number, since it uses less digits than its factorization.

20203143111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132046710 (or 132046707 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 20203143111 its reverse (11134130202), we get a palindrome (31337273313).

The spelling of 20203143111 in words is "twenty billion, two hundred three million, one hundred forty-three thousand, one hundred eleven".