347421229 has 2 divisors, whose sum is σ = 347421230. Its totient is φ = 347421228.

The previous prime is 347421211. The next prime is 347421281. The reversal of 347421229 is 922124743.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 344956329 + 2464900 = 18573^2 + 1570^2 .

It is an emirp because it is prime and its reverse (922124743) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 347421229 - 2⁷ = 347421101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 347421194 and 347421203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (347421029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173710614 + 173710615.

It is an arithmetic number, because the mean of its divisors is an integer number (173710615).

Almost surely, 2^347421229 is an apocalyptic number.

It is an amenable number.

347421229 is a deficient number, since it is larger than the sum of its proper divisors (1).

347421229 is an equidigital number, since it uses as much as digits as its factorization.

347421229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 347421229 is about 18639.2389597859. The cubic root of 347421229 is about 702.9948078263.

The spelling of 347421229 in words is "three hundred forty-seven million, four hundred twenty-one thousand, two hundred twenty-nine".