320430231 has 24 divisors (see below), whose sum is σ = 531498240. Its totient is φ = 183978000.

The previous prime is 320430223. The next prime is 320430233. The reversal of 320430231 is 132034023.

320430231 is a `hidden beast` number, since 3 + 2 + 0 + 430 + 231 = 666.

It is not a de Polignac number, because 320430231 - 2³ = 320430223 is a prime.

It is a super-2 number, since 2×320430231² = 205351065877426722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320430233) 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 23 ways as a sum of consecutive naturals, for example, 83295 + ... + 87056.

It is an arithmetic number, because the mean of its divisors is an integer number (22145760).

Almost surely, 2^320430231 is an apocalyptic number.

320430231 is a deficient number, since it is larger than the sum of its proper divisors (211068009).

320430231 is a wasteful number, since it uses less digits than its factorization.

320430231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170387 (or 170384 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 320430231 is about 17900.5651028117. The cubic root of 320430231 is about 684.2967766728.

Adding to 320430231 its reverse (132034023), we get a palindrome (452464254).

The spelling of 320430231 in words is "three hundred twenty million, four hundred thirty thousand, two hundred thirty-one".