347131 has 2 divisors, whose sum is σ = 347132. Its totient is φ = 347130.

The previous prime is 347129. The next prime is 347141. The reversal of 347131 is 131743.

It is a weak prime.

It is an emirp because it is prime and its reverse (131743) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 347131 - 2¹ = 347129 is a prime.

It is a super-2 number, since 2×347131² = 240999862322, which contains 22 as substring.

Together with 347129, it forms a pair of twin primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 347099 and 347108.

It is not a weakly prime, because it can be changed into another prime (347141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173565 + 173566.

It is an arithmetic number, because the mean of its divisors is an integer number (173566).

2³⁴⁷¹³¹ is an apocalyptic number.

347131 is a deficient number, since it is larger than the sum of its proper divisors (1).

347131 is an equidigital number, since it uses as much as digits as its factorization.

347131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252, while the sum is 19.

The square root of 347131 is about 589.1782412819. The cubic root of 347131 is about 70.2798997185.

Adding to 347131 its reverse (131743), we get a palindrome (478874).

The spelling of 347131 in words is "three hundred forty-seven thousand, one hundred thirty-one".