131143123213 has 2 divisors, whose sum is σ = 131143123214. Its totient is φ = 131143123212.

The previous prime is 131143123157. The next prime is 131143123277. The reversal of 131143123213 is 312321341131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88003002409 + 43140120804 = 296653^2 + 207702^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131143123213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131143223213) 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, 65571561606 + 65571561607.

It is an arithmetic number, because the mean of its divisors is an integer number (65571561607).

Almost surely, 2^131143123213 is an apocalyptic number.

It is an amenable number.

131143123213 is a deficient number, since it is larger than the sum of its proper divisors (1).

131143123213 is an equidigital number, since it uses as much as digits as its factorization.

131143123213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

Adding to 131143123213 its reverse (312321341131), we get a palindrome (443464464344).

The spelling of 131143123213 in words is "one hundred thirty-one billion, one hundred forty-three million, one hundred twenty-three thousand, two hundred thirteen".