16560131 has 16 divisors (see below), whose sum is σ = 19803840. Its totient is φ = 13563648.

The previous prime is 16560109. The next prime is 16560133. The reversal of 16560131 is 13106561.

It is a happy number.

It is not a de Polignac number, because 16560131 - 2¹⁰ = 16559107 is a prime.

It is a super-2 number, since 2×16560131² = 548475877474322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16560097 and 16560106.

It is not an unprimeable number, because it can be changed into a prime (16560133) 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 15 ways as a sum of consecutive naturals, for example, 170675 + ... + 170771.

It is an arithmetic number, because the mean of its divisors is an integer number (1237740).

Almost surely, 2^16560131 is an apocalyptic number.

16560131 is a deficient number, since it is larger than the sum of its proper divisors (3243709).

16560131 is an frugal number, since it uses more digits than its factorization.

16560131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 16560131 is about 4069.4140855902. The cubic root of 16560131 is about 254.8910517542.

Adding to 16560131 its reverse (13106561), we get a palindrome (29666692).

The spelling of 16560131 in words is "sixteen million, five hundred sixty thousand, one hundred thirty-one".