20233131011 has 4 divisors (see below), whose sum is σ = 20233911072. Its totient is φ = 20232350952.

The previous prime is 20233130999. The next prime is 20233131013. The reversal of 20233131011 is 11013133202.

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 20233131011 - 2³⁰ = 19159389187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20233131013) 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 3 ways as a sum of consecutive naturals, for example, 349736 + ... + 403461.

It is an arithmetic number, because the mean of its divisors is an integer number (5058477768).

Almost surely, 2^20233131011 is an apocalyptic number.

20233131011 is a deficient number, since it is larger than the sum of its proper divisors (780061).

20233131011 is an equidigital number, since it uses as much as digits as its factorization.

20233131011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780060.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20233131011 its reverse (11013133202), we get a palindrome (31246264213).

The spelling of 20233131011 in words is "twenty billion, two hundred thirty-three million, one hundred thirty-one thousand, eleven".