347381 has 4 divisors (see below), whose sum is σ = 348672. Its totient is φ = 346092.

The previous prime is 347359. The next prime is 347401. The reversal of 347381 is 183743.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 183743 = 7 ⋅26249.

It is a cyclic number.

It is not a de Polignac number, because 347381 - 2⁶ = 347317 is a prime.

It is a super-2 number, since 2×347381² = 241347118322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 347381.

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 347381.

It is not an unprimeable number, because it can be changed into a prime (347341) 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 3 ways as a sum of consecutive naturals, for example, 71 + ... + 836.

It is an arithmetic number, because the mean of its divisors is an integer number (87168).

2³⁴⁷³⁸¹ is an apocalyptic number.

It is an amenable number.

347381 is a deficient number, since it is larger than the sum of its proper divisors (1291).

347381 is an equidigital number, since it uses as much as digits as its factorization.

347381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290.

The product of its digits is 2016, while the sum is 26.

The square root of 347381 is about 589.3903630023. The cubic root of 347381 is about 70.2967672784.

The spelling of 347381 in words is "three hundred forty-seven thousand, three hundred eighty-one".