20321211303 has 24 divisors (see below), whose sum is σ = 30903425280. Its totient is φ = 12832091280.

The previous prime is 20321211301. The next prime is 20321211389. The reversal of 20321211303 is 30311212302.

20321211303 is a `hidden beast` number, since 20 + 321 + 21 + 1 + 303 = 666.

It is not a de Polignac number, because 20321211303 - 2¹ = 20321211301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321211301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1760850 + ... + 1772352.

It is an arithmetic number, because the mean of its divisors is an integer number (1287642720).

Almost surely, 2^20321211303 is an apocalyptic number.

20321211303 is a deficient number, since it is larger than the sum of its proper divisors (10582213977).

20321211303 is a wasteful number, since it uses less digits than its factorization.

20321211303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21859 (or 21856 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20321211303 its reverse (30311212302), we get a palindrome (50632423605).

Subtracting 20321211303 from its reverse (30311212302), we obtain a palindrome (9990000999).

The spelling of 20321211303 in words is "twenty billion, three hundred twenty-one million, two hundred eleven thousand, three hundred three".