347213 has 4 divisors (see below), whose sum is σ = 350688. Its totient is φ = 343740.

The previous prime is 347209. The next prime is 347227. The reversal of 347213 is 312743.

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 347213 - 2² = 347209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 347213.

It is not an unprimeable number, because it can be changed into a prime (347233) 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, 1583 + ... + 1788.

It is an arithmetic number, because the mean of its divisors is an integer number (87672).

2³⁴⁷²¹³ is an apocalyptic number.

It is an amenable number.

347213 is a deficient number, since it is larger than the sum of its proper divisors (3475).

347213 is a wasteful number, since it uses less digits than its factorization.

347213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474.

The product of its digits is 504, while the sum is 20.

The square root of 347213 is about 589.2478256218. The cubic root of 347213 is about 70.2854331704.

Adding to 347213 its reverse (312743), we get a palindrome (659956).

The spelling of 347213 in words is "three hundred forty-seven thousand, two hundred thirteen".