346 has 4 divisors (see below), whose sum is σ = 522. Its totient is φ = 172.

The previous prime is 337. The next prime is 347. The reversal of 346 is 643.

346 is nontrivially palindromic in base 9 and base 15.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 225 + 121 = 15^2 + 11^2 .

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

346 is an undulating number in base 9 and base 15.

It is a plaindrome in base 4, base 6, base 10, base 12, base 14 and base 16.

It is a nialpdrome in base 8.

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85 + ... + 88.

346 is a deficient number, since it is larger than the sum of its proper divisors (176).

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

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

The sum of its prime factors is 175.

The product of its digits is 72, while the sum is 13.

The square root of 346 is about 18.6010752377. The cubic root of 346 is about 7.0203489517.

Subtracting from 346 its sum of digits (13), we obtain a palindrome (333).

Adding to 346 its reverse (643), we get a palindrome (989).

It can be divided in two parts, 3 and 46, that added together give a square (49 = 7^{2}).

The spelling of 346 in words is "three hundred forty-six", and thus it is an aban number.

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