345911 has 4 divisors (see below), whose sum is σ = 347424. Its totient is φ = 344400.

The previous prime is 345907. The next prime is 345923. The reversal of 345911 is 119543.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 119543 = 173 ⋅691.

It is a cyclic number.

It is not a de Polignac number, because 345911 - 2² = 345907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345011) 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, 335 + ... + 896.

It is an arithmetic number, because the mean of its divisors is an integer number (86856).

2³⁴⁵⁹¹¹ is an apocalyptic number.

345911 is a deficient number, since it is larger than the sum of its proper divisors (1513).

345911 is a wasteful number, since it uses less digits than its factorization.

345911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512.

The product of its digits is 540, while the sum is 23.

The square root of 345911 is about 588.1419896590. The cubic root of 345911 is about 70.1974696263.

The spelling of 345911 in words is "three hundred forty-five thousand, nine hundred eleven".