131438159 has 2 divisors, whose sum is σ = 131438160. Its totient is φ = 131438158.

The previous prime is 131438149. The next prime is 131438173. The reversal of 131438159 is 951834131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131438159 - 2²⁴ = 114660943 is a prime.

It is a Chen prime.

It is equal to p_7455185 and since 131438159 and 7455185 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131438119) 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, 65719079 + 65719080.

It is an arithmetic number, because the mean of its divisors is an integer number (65719080).

Almost surely, 2^131438159 is an apocalyptic number.

131438159 is a deficient number, since it is larger than the sum of its proper divisors (1).

131438159 is an equidigital number, since it uses as much as digits as its factorization.

131438159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 35.

The square root of 131438159 is about 11464.6482283583. The cubic root of 131438159 is about 508.4409121295.

The spelling of 131438159 in words is "one hundred thirty-one million, four hundred thirty-eight thousand, one hundred fifty-nine".