131073857 has 2 divisors, whose sum is σ = 131073858. Its totient is φ = 131073856.

The previous prime is 131073853. The next prime is 131073871. The reversal of 131073857 is 758370131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110859841 + 20214016 = 10529^2 + 4496^2 .

It is a cyclic number.

It is not a de Polignac number, because 131073857 - 2² = 131073853 is a prime.

It is not a weakly prime, because it can be changed into another prime (131073851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65536928 + 65536929.

It is an arithmetic number, because the mean of its divisors is an integer number (65536929).

Almost surely, 2^131073857 is an apocalyptic number.

It is an amenable number.

131073857 is a deficient number, since it is larger than the sum of its proper divisors (1).

131073857 is an equidigital number, since it uses as much as digits as its factorization.

131073857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 131073857 is about 11448.7491456491. The cubic root of 131073857 is about 507.9707355473.

The spelling of 131073857 in words is "one hundred thirty-one million, seventy-three thousand, eight hundred fifty-seven".