20303322013 has 16 divisors (see below), whose sum is σ = 22821757056. Its totient is φ = 17921977920.

The previous prime is 20303321989. The next prime is 20303322031. The reversal of 20303322013 is 31022330302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20303322013 - 2²⁹ = 19766451101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303322073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1647631 + ... + 1659907.

It is an arithmetic number, because the mean of its divisors is an integer number (1426359816).

Almost surely, 2^20303322013 is an apocalyptic number.

20303322013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20303322013 is a deficient number, since it is larger than the sum of its proper divisors (2518435043).

20303322013 is a wasteful number, since it uses less digits than its factorization.

20303322013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17844.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20303322013 its reverse (31022330302), we get a palindrome (51325652315).

The spelling of 20303322013 in words is "twenty billion, three hundred three million, three hundred twenty-two thousand, thirteen".