320321311 has 8 divisors (see below), whose sum is σ = 322728224. Its totient is φ = 317921760.

The previous prime is 320321303. The next prime is 320321317. The reversal of 320321311 is 113123023.

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 320321311 - 2³ = 320321303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320321317) 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, 109510 + ... + 112396.

It is an arithmetic number, because the mean of its divisors is an integer number (40341028).

Almost surely, 2^320321311 is an apocalyptic number.

320321311 is a deficient number, since it is larger than the sum of its proper divisors (2406913).

320321311 is a wasteful number, since it uses less digits than its factorization.

320321311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 320321311 is about 17897.5224821761. The cubic root of 320321311 is about 684.2192329577.

Adding to 320321311 its reverse (113123023), we get a palindrome (433444334).

The spelling of 320321311 in words is "three hundred twenty million, three hundred twenty-one thousand, three hundred eleven".