20012131103 has 8 divisors (see below), whose sum is σ = 20358808560. Its totient is φ = 19666054080.

The previous prime is 20012131093. The next prime is 20012131109. The reversal of 20012131103 is 30113121002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20012131103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012131109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82613 + ... + 216446.

It is an arithmetic number, because the mean of its divisors is an integer number (2544851070).

Almost surely, 2^20012131103 is an apocalyptic number.

20012131103 is a deficient number, since it is larger than the sum of its proper divisors (346677457).

20012131103 is a wasteful number, since it uses less digits than its factorization.

20012131103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300217.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20012131103 its reverse (30113121002), we get a palindrome (50125252105).

The spelling of 20012131103 in words is "twenty billion, twelve million, one hundred thirty-one thousand, one hundred three".