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43213 = 79547
BaseRepresentation
bin1010100011001101
32012021111
422203031
52340323
6532021
7236662
oct124315
965244
1043213
112a515
1221011
1316891
1411a69
15cc0d
hexa8cd

43213 has 4 divisors (see below), whose sum is σ = 43840. Its totient is φ = 42588.

The previous prime is 43207. The next prime is 43223. The reversal of 43213 is 31234.

43213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 43213 - 29 = 42701 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43193 and 43202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43223) 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, 195 + ... + 352.

It is an arithmetic number, because the mean of its divisors is an integer number (10960).

243213 is an apocalyptic number.

It is an amenable number.

43213 is a deficient number, since it is larger than the sum of its proper divisors (627).

43213 is an equidigital number, since it uses as much as digits as its factorization.

43213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626.

The product of its digits is 72, while the sum is 13.

The square root of 43213 is about 207.8773676955. The cubic root of 43213 is about 35.0917321565.

Adding to 43213 its reverse (31234), we get a palindrome (74447).

It can be divided in two parts, 43 and 213, that added together give a 8-th power (256 = 28).

The spelling of 43213 in words is "forty-three thousand, two hundred thirteen".

Divisors: 1 79 547 43213