131031751 has 2 divisors, whose sum is σ = 131031752. Its totient is φ = 131031750.

The previous prime is 131031737. The next prime is 131031779. The reversal of 131031751 is 157130131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131031751 - 2⁷ = 131031623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131031781) 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, 65515875 + 65515876.

It is an arithmetic number, because the mean of its divisors is an integer number (65515876).

Almost surely, 2^131031751 is an apocalyptic number.

131031751 is a deficient number, since it is larger than the sum of its proper divisors (1).

131031751 is an equidigital number, since it uses as much as digits as its factorization.

131031751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 315, while the sum is 22.

The square root of 131031751 is about 11446.9101070988. The cubic root of 131031751 is about 507.9163364297.

Adding to 131031751 its reverse (157130131), we get a palindrome (288161882).

The spelling of 131031751 in words is "one hundred thirty-one million, thirty-one thousand, seven hundred fifty-one".