320000131 has 4 divisors (see below), whose sum is σ = 349091064. Its totient is φ = 290909200.

The previous prime is 320000113. The next prime is 320000137. The reversal of 320000131 is 131000023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320000131 is a prime.

It is a super-2 number, since 2×320000131² = 204800167680034322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320000137) 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, 14545450 + ... + 14545471.

It is an arithmetic number, because the mean of its divisors is an integer number (87272766).

Almost surely, 2^320000131 is an apocalyptic number.

320000131 is a deficient number, since it is larger than the sum of its proper divisors (29090933).

320000131 is a wasteful number, since it uses less digits than its factorization.

320000131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29090932.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 320000131 is about 17888.5474815593. The cubic root of 320000131 is about 683.9904720069.

Adding to 320000131 its reverse (131000023), we get a palindrome (451000154).

The spelling of 320000131 in words is "three hundred twenty million, one hundred thirty-one", and thus it is an aban number.