131231133317131 has 2 divisors, whose sum is σ = 131231133317132. Its totient is φ = 131231133317130.

The previous prime is 131231133317129. The next prime is 131231133317143. The reversal of 131231133317131 is 131713331132131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131231133317131 - 2¹ = 131231133317129 is a prime.

It is a super-2 number, since 2×131231133317131² (a number of 29 digits) contains 22 as substring.

Together with 131231133317129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (131231133917131) 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, 65615566658565 + 65615566658566.

It is an arithmetic number, because the mean of its divisors is an integer number (65615566658566).

Almost surely, 2^{131231133317131} is an apocalyptic number.

131231133317131 is a deficient number, since it is larger than the sum of its proper divisors (1).

131231133317131 is an equidigital number, since it uses as much as digits as its factorization.

131231133317131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 34.

Adding to 131231133317131 its reverse (131713331132131), we get a palindrome (262944464449262).

The spelling of 131231133317131 in words is "one hundred thirty-one trillion, two hundred thirty-one billion, one hundred thirty-three million, three hundred seventeen thousand, one hundred thirty-one".