347121 has 6 divisors (see below), whose sum is σ = 501410. Its totient is φ = 231408.

The previous prime is 347099. The next prime is 347129. The reversal of 347121 is 121743.

It can be written as a sum of positive squares in only one way, i.e., 314721 + 32400 = 561^2 + 180^2 .

It is not a de Polignac number, because 347121 - 2⁶ = 347057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 347094 and 347103.

It is not an unprimeable number, because it can be changed into a prime (347129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19276 + ... + 19293.

2³⁴⁷¹²¹ is an apocalyptic number.

It is an amenable number.

347121 is a deficient number, since it is larger than the sum of its proper divisors (154289).

347121 is a wasteful number, since it uses less digits than its factorization.

347121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38575 (or 38572 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 347121 is about 589.1697548245. The cubic root of 347121 is about 70.2792248477.

Adding to 347121 its reverse (121743), we get a palindrome (468864).

The spelling of 347121 in words is "three hundred forty-seven thousand, one hundred twenty-one", and thus it is an iban number.