347221843 has 4 divisors (see below), whose sum is σ = 359195040. Its totient is φ = 335248648.

The previous prime is 347221813. The next prime is 347221871. The reversal of 347221843 is 348122743.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 347221843 - 2⁹ = 347221331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 347221799 and 347221808.

It is not an unprimeable number, because it can be changed into a prime (347221813) 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, 5986555 + ... + 5986612.

It is an arithmetic number, because the mean of its divisors is an integer number (89798760).

Almost surely, 2^347221843 is an apocalyptic number.

347221843 is a deficient number, since it is larger than the sum of its proper divisors (11973197).

347221843 is a wasteful number, since it uses less digits than its factorization.

347221843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11973196.

The product of its digits is 32256, while the sum is 34.

The square root of 347221843 is about 18633.8896368955. The cubic root of 347221843 is about 702.8602985393.

The spelling of 347221843 in words is "three hundred forty-seven million, two hundred twenty-one thousand, eight hundred forty-three".