131448857 has 2 divisors, whose sum is σ = 131448858. Its totient is φ = 131448856.

The previous prime is 131448833. The next prime is 131448869. The reversal of 131448857 is 758844131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101022601 + 30426256 = 10051^2 + 5516^2 .

It is a cyclic number.

It is not a de Polignac number, because 131448857 - 2⁸ = 131448601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (131748857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65724428 + 65724429.

It is an arithmetic number, because the mean of its divisors is an integer number (65724429).

Almost surely, 2^131448857 is an apocalyptic number.

It is an amenable number.

131448857 is a deficient number, since it is larger than the sum of its proper divisors (1).

131448857 is an equidigital number, since it uses as much as digits as its factorization.

131448857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 41.

The square root of 131448857 is about 11465.1147835510. The cubic root of 131448857 is about 508.4547060773.

The spelling of 131448857 in words is "one hundred thirty-one million, four hundred forty-eight thousand, eight hundred fifty-seven".