20103031103013 has 20 divisors (see below), whose sum is σ = 30063131297760. Its totient is φ = 13387437420552.

The previous prime is 20103031102991. The next prime is 20103031103027. The reversal of 20103031103013 is 31030113030102.

It is a happy number.

20103031103013 is a `hidden beast` number, since 20 + 1 + 0 + 30 + 311 + 0 + 301 + 3 = 666.

It is not a de Polignac number, because 20103031103013 - 2²¹ = 20103029005861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103031103033) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 134955795 + ... + 135104672.

It is an arithmetic number, because the mean of its divisors is an integer number (1503156564888).

Almost surely, 2^{20103031103013} is an apocalyptic number.

It is an amenable number.

20103031103013 is a deficient number, since it is larger than the sum of its proper divisors (9960100194747).

20103031103013 is an equidigital number, since it uses as much as digits as its factorization.

20103031103013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270061398 (or 270061389 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 20103031103013 its reverse (31030113030102), we get a palindrome (51133144133115).

The spelling of 20103031103013 in words is "twenty trillion, one hundred three billion, thirty-one million, one hundred three thousand, thirteen".