20121313303 has 64 divisors (see below), whose sum is σ = 26211225600. Its totient is φ = 15338163456.

The previous prime is 20121313297. The next prime is 20121313321. The reversal of 20121313303 is 30331312102.

It is a de Polignac number, because none of the positive numbers 2^k-20121313303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121313903) 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 63 ways as a sum of consecutive naturals, for example, 14040675 + ... + 14042107.

It is an arithmetic number, because the mean of its divisors is an integer number (409550400).

Almost surely, 2^20121313303 is an apocalyptic number.

20121313303 is a deficient number, since it is larger than the sum of its proper divisors (6089912297).

20121313303 is a wasteful number, since it uses less digits than its factorization.

20121313303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581 (or 1567 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20121313303 its reverse (30331312102), we get a palindrome (50452625405).

The spelling of 20121313303 in words is "twenty billion, one hundred twenty-one million, three hundred thirteen thousand, three hundred three".