20003131011 has 8 divisors (see below), whose sum is σ = 28074569920. Its totient is φ = 12633556392.

The previous prime is 20003130977. The next prime is 20003131013. The reversal of 20003131011 is 11013130002.

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

It is not a de Polignac number, because 20003131011 - 2¹¹ = 20003128963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20003131013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175466005 + ... + 175466118.

It is an arithmetic number, because the mean of its divisors is an integer number (3509321240).

Almost surely, 2^20003131011 is an apocalyptic number.

20003131011 is a deficient number, since it is larger than the sum of its proper divisors (8071438909).

20003131011 is a wasteful number, since it uses less digits than its factorization.

20003131011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350932145.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 20003131011 its reverse (11013130002), we get a palindrome (31016261013).

The spelling of 20003131011 in words is "twenty billion, three million, one hundred thirty-one thousand, eleven".