20321303113 has 4 divisors (see below), whose sum is σ = 20325542400. Its totient is φ = 20317063828.

The previous prime is 20321303063. The next prime is 20321303159. The reversal of 20321303113 is 31130312302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31130312302 = 2 ⋅15565156151.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20321303113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20321303173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2112445 + ... + 2122042.

It is an arithmetic number, because the mean of its divisors is an integer number (5081385600).

Almost surely, 2^20321303113 is an apocalyptic number.

It is an amenable number.

20321303113 is a deficient number, since it is larger than the sum of its proper divisors (4239287).

20321303113 is an equidigital number, since it uses as much as digits as its factorization.

20321303113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4239286.

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

Adding to 20321303113 its reverse (31130312302), we get a palindrome (51451615415).

The spelling of 20321303113 in words is "twenty billion, three hundred twenty-one million, three hundred three thousand, one hundred thirteen".