20321313303 has 32 divisors (see below), whose sum is σ = 28786222080. Its totient is φ = 12725475840.

The previous prime is 20321313293. The next prime is 20321313317. The reversal of 20321313303 is 30331312302.

It is not a de Polignac number, because 20321313303 - 2¹⁶ = 20321247767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20321313303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321313403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 837918 + ... + 861828.

It is an arithmetic number, because the mean of its divisors is an integer number (899569440).

Almost surely, 2^20321313303 is an apocalyptic number.

20321313303 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20321313303 is a deficient number, since it is larger than the sum of its proper divisors (8464908777).

20321313303 is a wasteful number, since it uses less digits than its factorization.

20321313303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24159.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 20321313303 its reverse (30331312302), we get a palindrome (50652625605).

The spelling of 20321313303 in words is "twenty billion, three hundred twenty-one million, three hundred thirteen thousand, three hundred three".