131128663 has 2 divisors, whose sum is σ = 131128664. Its totient is φ = 131128662.

The previous prime is 131128651. The next prime is 131128687. The reversal of 131128663 is 366821131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131128663 - 2¹⁷ = 130997591 is a prime.

It is a super-4 number, since 4×131128663⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131128363) 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, 65564331 + 65564332.

It is an arithmetic number, because the mean of its divisors is an integer number (65564332).

Almost surely, 2^131128663 is an apocalyptic number.

131128663 is a deficient number, since it is larger than the sum of its proper divisors (1).

131128663 is an equidigital number, since it uses as much as digits as its factorization.

131128663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 131128663 is about 11451.1424320895. The cubic root of 131128663 is about 508.0415250636.

Adding to 131128663 its reverse (366821131), we get a palindrome (497949794).

The spelling of 131128663 in words is "one hundred thirty-one million, one hundred twenty-eight thousand, six hundred sixty-three".