131122431227 has 2 divisors, whose sum is σ = 131122431228. Its totient is φ = 131122431226.

The previous prime is 131122431211. The next prime is 131122431287. The reversal of 131122431227 is 722134221131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131122431227 - 2⁴ = 131122431211 is a prime.

It is a super-3 number, since 3×131122431227³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 131122431227.

It is not a weakly prime, because it can be changed into another prime (131122431287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65561215613 + 65561215614.

It is an arithmetic number, because the mean of its divisors is an integer number (65561215614).

Almost surely, 2^131122431227 is an apocalyptic number.

131122431227 is a deficient number, since it is larger than the sum of its proper divisors (1).

131122431227 is an equidigital number, since it uses as much as digits as its factorization.

131122431227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

Adding to 131122431227 its reverse (722134221131), we get a palindrome (853256652358).

The spelling of 131122431227 in words is "one hundred thirty-one billion, one hundred twenty-two million, four hundred thirty-one thousand, two hundred twenty-seven".