320430331 has 8 divisors (see below), whose sum is σ = 365377824. Its totient is φ = 278382720.

The previous prime is 320430283. The next prime is 320430337. The reversal of 320430331 is 133034023.

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 320430331 - 2⁹ = 320429819 is a prime.

It is a super-2 number, since 2×320430331² = 205351194049539122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320430299 and 320430308.

It is not an unprimeable number, because it can be changed into a prime (320430337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 724735 + ... + 725176.

It is an arithmetic number, because the mean of its divisors is an integer number (45672228).

Almost surely, 2^320430331 is an apocalyptic number.

320430331 is a deficient number, since it is larger than the sum of its proper divisors (44947493).

320430331 is a wasteful number, since it uses less digits than its factorization.

320430331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449941.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 320430331 is about 17900.5678960194. The cubic root of 320430331 is about 684.2968478580.

Adding to 320430331 its reverse (133034023), we get a palindrome (453464354).

It can be divided in two parts, 320430 and 331, that multiplied together give a triangular number (106062330 = T₁₄₅₆₄).

The spelling of 320430331 in words is "three hundred twenty million, four hundred thirty thousand, three hundred thirty-one".