20331131011 has 8 divisors (see below), whose sum is σ = 21529173600. Its totient is φ = 19133321088.

The previous prime is 20331131003. The next prime is 20331131057. The reversal of 20331131011 is 11013113302.

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

It is a cyclic number.

It is not a de Polignac number, because 20331131011 - 2³ = 20331131003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331131111) 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, 141325 + ... + 246241.

It is an arithmetic number, because the mean of its divisors is an integer number (2691146700).

Almost surely, 2^20331131011 is an apocalyptic number.

20331131011 is a deficient number, since it is larger than the sum of its proper divisors (1198042589).

20331131011 is a wasteful number, since it uses less digits than its factorization.

20331131011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116333.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 20331131011 its reverse (11013113302), we get a palindrome (31344244313).

The spelling of 20331131011 in words is "twenty billion, three hundred thirty-one million, one hundred thirty-one thousand, eleven".