320560131 has 8 divisors (see below), whose sum is σ = 445996800. Its totient is φ = 204415112.

The previous prime is 320560127. The next prime is 320560147. The reversal of 320560131 is 131065023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320560131 - 2² = 320560127 is a prime.

It is a super-2 number, since 2×320560131² = 205517595173474322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320560098 and 320560107.

It is not an unprimeable number, because it can be changed into a prime (320560931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2322831 + ... + 2322968.

It is an arithmetic number, because the mean of its divisors is an integer number (55749600).

Almost surely, 2^320560131 is an apocalyptic number.

320560131 is a deficient number, since it is larger than the sum of its proper divisors (125436669).

320560131 is a wasteful number, since it uses less digits than its factorization.

320560131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4645825.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 320560131 is about 17904.1931122293. The cubic root of 320560131 is about 684.3892337650.

It can be divided in two parts, 3205 and 60131, that added together give a palindrome (63336).

The spelling of 320560131 in words is "three hundred twenty million, five hundred sixty thousand, one hundred thirty-one".