20103010013 has 4 divisors (see below), whose sum is σ = 20328886620. Its totient is φ = 19877133408.

The previous prime is 20103010009. The next prime is 20103010043. The reversal of 20103010013 is 31001030102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2768127769 + 17334882244 = 52613^2 + 131662^2 .

It is a cyclic number.

It is not a de Polignac number, because 20103010013 - 2² = 20103010009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20103009976 and 20103010003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103010043) 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, 112938170 + ... + 112938347.

It is an arithmetic number, because the mean of its divisors is an integer number (5082221655).

Almost surely, 2^20103010013 is an apocalyptic number.

It is an amenable number.

20103010013 is a deficient number, since it is larger than the sum of its proper divisors (225876607).

20103010013 is an equidigital number, since it uses as much as digits as its factorization.

20103010013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225876606.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 20103010013 its reverse (31001030102), we get a palindrome (51104040115).

The spelling of 20103010013 in words is "twenty billion, one hundred three million, ten thousand, thirteen".