20011231013303 has 4 divisors (see below), whose sum is σ = 20011247958000. Its totient is φ = 20011214068608.

The previous prime is 20011231013261. The next prime is 20011231013321. The reversal of 20011231013303 is 30331013211002.

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 20011231013303 - 2¹⁸ = 20011230751159 is a prime.

It is a super-3 number, since 3×20011231013303³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011231013363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6556475 + ... + 9110972.

It is an arithmetic number, because the mean of its divisors is an integer number (5002811989500).

Almost surely, 2^{20011231013303} is an apocalyptic number.

20011231013303 is a deficient number, since it is larger than the sum of its proper divisors (16944697).

20011231013303 is a wasteful number, since it uses less digits than its factorization.

20011231013303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16944696.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 20011231013303 its reverse (30331013211002), we get a palindrome (50342244224305).

The spelling of 20011231013303 in words is "twenty trillion, eleven billion, two hundred thirty-one million, thirteen thousand, three hundred three".