347221223 has 4 divisors (see below), whose sum is σ = 349300560. Its totient is φ = 345141888.

The previous prime is 347221213. The next prime is 347221247. The reversal of 347221223 is 322122743.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322122743 = 617 ⋅522079.

It is a cyclic number.

It is not a de Polignac number, because 347221223 - 2²⁴ = 330444007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 347221192 and 347221201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (347221213) 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, 1039418 + ... + 1039751.

It is an arithmetic number, because the mean of its divisors is an integer number (87325140).

Almost surely, 2^347221223 is an apocalyptic number.

347221223 is a deficient number, since it is larger than the sum of its proper divisors (2079337).

347221223 is a wasteful number, since it uses less digits than its factorization.

347221223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079336.

The product of its digits is 4032, while the sum is 26.

The square root of 347221223 is about 18633.8730005332. The cubic root of 347221223 is about 702.8598801961.

Adding to 347221223 its reverse (322122743), we get a palindrome (669343966).

The spelling of 347221223 in words is "three hundred forty-seven million, two hundred twenty-one thousand, two hundred twenty-three".