Search a number
-
+
320424213 = 3106808071
BaseRepresentation
bin10011000110010…
…100100100010101
3211022221020101110
4103012110210111
51124012033323
651443445233
710640363244
oct2306244425
9738836343
10320424213
111549644aa
128b386819
13514cc335
14307ac95b
151d1e5793
hex13194915

320424213 has 4 divisors (see below), whose sum is σ = 427232288. Its totient is φ = 213616140.

The previous prime is 320424191. The next prime is 320424241. The reversal of 320424213 is 312424023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312424023 = 3104141341.

It is not a de Polignac number, because 320424213 - 26 = 320424149 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 320424213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320420213) 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, 53404033 + ... + 53404038.

It is an arithmetic number, because the mean of its divisors is an integer number (106808072).

Almost surely, 2320424213 is an apocalyptic number.

It is an amenable number.

320424213 is a deficient number, since it is larger than the sum of its proper divisors (106808075).

320424213 is a wasteful number, since it uses less digits than its factorization.

320424213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106808074.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 320424213 is about 17900.3970067705. The cubic root of 320424213 is about 684.2924927202.

Adding to 320424213 its reverse (312424023), we get a palindrome (632848236).

The spelling of 320424213 in words is "three hundred twenty million, four hundred twenty-four thousand, two hundred thirteen".

Divisors: 1 3 106808071 320424213