160531109 has 4 divisors (see below), whose sum is σ = 160627404. Its totient is φ = 160434816.

The previous prime is 160531097. The next prime is 160531141. The reversal of 160531109 is 901135061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 901135061 = 107 ⋅8421823.

It can be written as a sum of positive squares in 2 ways, for example, as 154306084 + 6225025 = 12422^2 + 2495^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-160531109 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 (160531159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45602 + ... + 48995.

It is an arithmetic number, because the mean of its divisors is an integer number (40156851).

Almost surely, 2^160531109 is an apocalyptic number.

It is an amenable number.

160531109 is a deficient number, since it is larger than the sum of its proper divisors (96295).

160531109 is an equidigital number, since it uses as much as digits as its factorization.

160531109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96294.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 160531109 is about 12670.0871741279. The cubic root of 160531109 is about 543.4835480717.

The spelling of 160531109 in words is "one hundred sixty million, five hundred thirty-one thousand, one hundred nine".