131660159 has 4 divisors (see below), whose sum is σ = 133625304. Its totient is φ = 129695016.

The previous prime is 131660147. The next prime is 131660209. The reversal of 131660159 is 951066131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131660159 - 2¹⁶ = 131594623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131660129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 982472 + ... + 982605.

It is an arithmetic number, because the mean of its divisors is an integer number (33406326).

Almost surely, 2^131660159 is an apocalyptic number.

131660159 is a deficient number, since it is larger than the sum of its proper divisors (1965145).

131660159 is an equidigital number, since it uses as much as digits as its factorization.

131660159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965144.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 131660159 is about 11474.3260804284. The cubic root of 131660159 is about 508.7270045769.

The spelling of 131660159 in words is "one hundred thirty-one million, six hundred sixty thousand, one hundred fifty-nine".