320313211 has 4 divisors (see below), whose sum is σ = 323423152. Its totient is φ = 317203272.

The previous prime is 320313187. The next prime is 320313221. The reversal of 320313211 is 112313023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112313023 = 6473 ⋅17351.

It is a cyclic number.

It is not a de Polignac number, because 320313211 - 2¹⁷ = 320182139 is a prime.

It is a super-2 number, since 2×320313211² = 205201106282261042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320313221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1554816 + ... + 1555021.

It is an arithmetic number, because the mean of its divisors is an integer number (80855788).

Almost surely, 2^320313211 is an apocalyptic number.

320313211 is a deficient number, since it is larger than the sum of its proper divisors (3109941).

320313211 is a wasteful number, since it uses less digits than its factorization.

320313211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3109940.

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

The square root of 320313211 is about 17897.2961924420. The cubic root of 320313211 is about 684.2134656003.

Adding to 320313211 its reverse (112313023), we get a palindrome (432626234).

The spelling of 320313211 in words is "three hundred twenty million, three hundred thirteen thousand, two hundred eleven".