20103131034013 has 2 divisors, whose sum is σ = 20103131034014. Its totient is φ = 20103131034012.

The previous prime is 20103131033981. The next prime is 20103131034047. The reversal of 20103131034013 is 31043013130102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11253059375364 + 8850071658649 = 3354558^2 + 2974907^2 .

It is a cyclic number.

It is not a de Polignac number, because 20103131034013 - 2⁵ = 20103131033981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20103131037013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10051565517006 + 10051565517007.

It is an arithmetic number, because the mean of its divisors is an integer number (10051565517007).

Almost surely, 2^{20103131034013} is an apocalyptic number.

It is an amenable number.

20103131034013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20103131034013 is an equidigital number, since it uses as much as digits as its factorization.

20103131034013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20103131034013 its reverse (31043013130102), we get a palindrome (51146144164115).

The spelling of 20103131034013 in words is "twenty trillion, one hundred three billion, one hundred thirty-one million, thirty-four thousand, thirteen".