320430311 has 8 divisors (see below), whose sum is σ = 324024000. Its totient is φ = 316856160.

The previous prime is 320430283. The next prime is 320430337. The reversal of 320430311 is 113034023.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320430311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320430311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320430391) 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, 29426 + ... + 38816.

It is an arithmetic number, because the mean of its divisors is an integer number (40503000).

Almost surely, 2^320430311 is an apocalyptic number.

320430311 is a deficient number, since it is larger than the sum of its proper divisors (3593689).

320430311 is a wasteful number, since it uses less digits than its factorization.

320430311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9769.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 320430311 is about 17900.5673373779. The cubic root of 320430311 is about 684.2968336210.

Adding to 320430311 its reverse (113034023), we get a palindrome (433464334).

The spelling of 320430311 in words is "three hundred twenty million, four hundred thirty thousand, three hundred eleven".