20023303013 has 12 divisors (see below), whose sum is σ = 23325681132. Its totient is φ = 17138318400.

The previous prime is 20023302997. The next prime is 20023303049. The reversal of 20023303013 is 31030332002.

It can be written as a sum of positive squares in 2 ways, for example, as 16492210084 + 3531092929 = 128422^2 + 59423^2 .

It is not a de Polignac number, because 20023303013 - 2⁴ = 20023302997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20023302982 and 20023303000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023306013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 257120 + ... + 325817.

It is an arithmetic number, because the mean of its divisors is an integer number (1943806761).

Almost surely, 2^20023303013 is an apocalyptic number.

It is an amenable number.

20023303013 is a deficient number, since it is larger than the sum of its proper divisors (3302378119).

20023303013 is an equidigital number, since it uses as much as digits as its factorization.

20023303013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583652 (or 583645 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 20023303013 its reverse (31030332002), we get a palindrome (51053635015).

The spelling of 20023303013 in words is "twenty billion, twenty-three million, three hundred three thousand, thirteen".