131258857 has 2 divisors, whose sum is σ = 131258858. Its totient is φ = 131258856.

The previous prime is 131258851. The next prime is 131258863. The reversal of 131258857 is 758852131.

It is a balanced prime because it is at equal distance from previous prime (131258851) and next prime (131258863).

It can be written as a sum of positive squares in only one way, i.e., 129868816 + 1390041 = 11396^2 + 1179^2 .

It is a cyclic number.

It is not a de Polignac number, because 131258857 - 2³ = 131258849 is a prime.

It is not a weakly prime, because it can be changed into another prime (131258851) 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, 65629428 + 65629429.

It is an arithmetic number, because the mean of its divisors is an integer number (65629429).

Almost surely, 2^131258857 is an apocalyptic number.

It is an amenable number.

131258857 is a deficient number, since it is larger than the sum of its proper divisors (1).

131258857 is an equidigital number, since it uses as much as digits as its factorization.

131258857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 40.

The square root of 131258857 is about 11456.8257820393. The cubic root of 131258857 is about 508.2096095440.

The spelling of 131258857 in words is "one hundred thirty-one million, two hundred fifty-eight thousand, eight hundred fifty-seven".