20003203111 has 4 divisors (see below), whose sum is σ = 20004927832. Its totient is φ = 20001478392.

The previous prime is 20003203057. The next prime is 20003203139. The reversal of 20003203111 is 11130230002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20003203111 - 2¹³ = 20003194919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20003203091 and 20003203100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003203151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 844845 + ... + 868198.

It is an arithmetic number, because the mean of its divisors is an integer number (5001231958).

Almost surely, 2^20003203111 is an apocalyptic number.

20003203111 is a deficient number, since it is larger than the sum of its proper divisors (1724721).

20003203111 is a wasteful number, since it uses less digits than its factorization.

20003203111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724720.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20003203111 its reverse (11130230002), we get a palindrome (31133433113).

The spelling of 20003203111 in words is "twenty billion, three million, two hundred three thousand, one hundred eleven".