20103101312131 has 6 divisors (see below), whose sum is σ = 20772507392196. Its totient is φ = 19454614172100.

The previous prime is 20103101312089. The next prime is 20103101312171. The reversal of 20103101312131 is 13121310130102.

It is not a de Polignac number, because 20103101312131 - 2²⁵ = 20103067757699 is a prime.

It is a super-2 number, since 2×20103101312131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20103101312099 and 20103101312108.

It is not an unprimeable number, because it can be changed into a prime (20103101312171) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10459469025 + ... + 10459470946.

It is an arithmetic number, because the mean of its divisors is an integer number (3462084565366).

Almost surely, 2^{20103101312131} is an apocalyptic number.

20103101312131 is a deficient number, since it is larger than the sum of its proper divisors (669406080065).

20103101312131 is an equidigital number, since it uses as much as digits as its factorization.

20103101312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20918940033 (or 20918940002 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 20103101312131 its reverse (13121310130102), we get a palindrome (33224411442233).

The spelling of 20103101312131 in words is "twenty trillion, one hundred three billion, one hundred one million, three hundred twelve thousand, one hundred thirty-one".