2102131310231 has 2 divisors, whose sum is σ = 2102131310232. Its totient is φ = 2102131310230.

The previous prime is 2102131310203. The next prime is 2102131310239. The reversal of 2102131310231 is 1320131312012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102131310231 is a prime.

It is a super-2 number, since 2×2102131310231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102131310239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051065655115 + 1051065655116.

It is an arithmetic number, because the mean of its divisors is an integer number (1051065655116).

Almost surely, 2^{2102131310231} is an apocalyptic number.

2102131310231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102131310231 is an equidigital number, since it uses as much as digits as its factorization.

2102131310231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2102131310231 its reverse (1320131312012), we get a palindrome (3422262622243).

The spelling of 2102131310231 in words is "two trillion, one hundred two billion, one hundred thirty-one million, three hundred ten thousand, two hundred thirty-one".