349381 has 2 divisors, whose sum is σ = 349382. Its totient is φ = 349380.

The previous prime is 349379. The next prime is 349387. The reversal of 349381 is 183943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 349281 + 100 = 591^2 + 10^2 .

It is an emirp because it is prime and its reverse (183943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 349381 - 2¹ = 349379 is a prime.

It is a super-2 number, since 2×349381² = 244134166322, which contains 22 as substring.

Together with 349379, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174690 + 174691.

It is an arithmetic number, because the mean of its divisors is an integer number (174691).

2³⁴⁹³⁸¹ is an apocalyptic number.

It is an amenable number.

349381 is a deficient number, since it is larger than the sum of its proper divisors (1).

349381 is an equidigital number, since it uses as much as digits as its factorization.

349381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 28.

The square root of 349381 is about 591.0845963143. The cubic root of 349381 is about 70.4314173005.

The spelling of 349381 in words is "three hundred forty-nine thousand, three hundred eighty-one".