131541659 has 4 divisors (see below), whose sum is σ = 132223416. Its totient is φ = 130859904.

The previous prime is 131541643. The next prime is 131541661. The reversal of 131541659 is 956145131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 956145131 = 16993 ⋅56267.

It is a cyclic number.

It is not a de Polignac number, because 131541659 - 2⁴ = 131541643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131541689) 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 in 3 ways as a sum of consecutive naturals, for example, 340589 + ... + 340974.

It is an arithmetic number, because the mean of its divisors is an integer number (33055854).

Almost surely, 2^131541659 is an apocalyptic number.

131541659 is a deficient number, since it is larger than the sum of its proper divisors (681757).

131541659 is an equidigital number, since it uses as much as digits as its factorization.

131541659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681756.

The product of its digits is 16200, while the sum is 35.

The square root of 131541659 is about 11469.1612160611. The cubic root of 131541659 is about 508.5743331191.

The spelling of 131541659 in words is "one hundred thirty-one million, five hundred forty-one thousand, six hundred fifty-nine".