2131100213113 has 4 divisors (see below), whose sum is σ = 2131103132788. Its totient is φ = 2131097293440.

The previous prime is 2131100213083. The next prime is 2131100213119. The reversal of 2131100213113 is 3113120011312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1675194369849 + 455905843264 = 1294293^2 + 675208^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131100213113 - 2³³ = 2122510278521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131100213119) 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, 722593 + ... + 2187313.

It is an arithmetic number, because the mean of its divisors is an integer number (532775783197).

Almost surely, 2^{2131100213113} is an apocalyptic number.

It is an amenable number.

2131100213113 is a deficient number, since it is larger than the sum of its proper divisors (2919675).

2131100213113 is a wasteful number, since it uses less digits than its factorization.

2131100213113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919674.

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

Adding to 2131100213113 its reverse (3113120011312), we get a palindrome (5244220224425).

The spelling of 2131100213113 in words is "two trillion, one hundred thirty-one billion, one hundred million, two hundred thirteen thousand, one hundred thirteen".