2131210112311 has 4 divisors (see below), whose sum is σ = 2435668699792. Its totient is φ = 1826751524832.

The previous prime is 2131210112219. The next prime is 2131210112323. The reversal of 2131210112311 is 1132110121312.

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 2131210112311 - 2¹³ = 2131210104119 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 (2131210112411) 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, 152229293730 + ... + 152229293743.

It is an arithmetic number, because the mean of its divisors is an integer number (608917174948).

Almost surely, 2^{2131210112311} is an apocalyptic number.

2131210112311 is a deficient number, since it is larger than the sum of its proper divisors (304458587481).

2131210112311 is an equidigital number, since it uses as much as digits as its factorization.

2131210112311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304458587480.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 2131210112311 its reverse (1132110121312), we get a palindrome (3263320233623).

Subtracting from 2131210112311 its reverse (1132110121312), we obtain a palindrome (999099990999).

The spelling of 2131210112311 in words is "two trillion, one hundred thirty-one billion, two hundred ten million, one hundred twelve thousand, three hundred eleven".