2131302120103 has 4 divisors (see below), whose sum is σ = 2295248437048. Its totient is φ = 1967355803160.

The previous prime is 2131302120091. The next prime is 2131302120107. The reversal of 2131302120103 is 3010212031312.

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

It is a cyclic number.

It is not a de Polignac number, because 2131302120103 - 2¹⁷ = 2131301989031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131302120107) 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, 81973158453 + ... + 81973158478.

It is an arithmetic number, because the mean of its divisors is an integer number (573812109262).

Almost surely, 2^{2131302120103} is an apocalyptic number.

2131302120103 is a deficient number, since it is larger than the sum of its proper divisors (163946316945).

2131302120103 is a wasteful number, since it uses less digits than its factorization.

2131302120103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163946316944.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 2131302120103 its reverse (3010212031312), we get a palindrome (5141514151415).

The spelling of 2131302120103 in words is "two trillion, one hundred thirty-one billion, three hundred two million, one hundred twenty thousand, one hundred three".