2131323113 has 2 divisors, whose sum is σ = 2131323114. Its totient is φ = 2131323112.

The previous prime is 2131323097. The next prime is 2131323127. The reversal of 2131323113 is 3113231312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2126777689 + 4545424 = 46117^2 + 2132^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131323113 - 2⁴ = 2131323097 is a prime.

It is not a weakly prime, because it can be changed into another prime (2131323143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065661556 + 1065661557.

It is an arithmetic number, because the mean of its divisors is an integer number (1065661557).

Almost surely, 2^2131323113 is an apocalyptic number.

It is an amenable number.

2131323113 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131323113 is an equidigital number, since it uses as much as digits as its factorization.

2131323113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 20.

The square root of 2131323113 is about 46166.2551329432. The cubic root of 2131323113 is about 1286.9147094063.

Adding to 2131323113 its reverse (3113231312), we get a palindrome (5244554425).

The spelling of 2131323113 in words is "two billion, one hundred thirty-one million, three hundred twenty-three thousand, one hundred thirteen".