345219 has 16 divisors (see below), whose sum is σ = 557568. Its totient is φ = 185472.

The previous prime is 345193. The next prime is 345221. The reversal of 345219 is 912543.

It is not a de Polignac number, because 345219 - 2⁸ = 344963 is a prime.

It is a super-2 number, since 2×345219² = 238352315922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (345229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127 + ... + 840.

It is an arithmetic number, because the mean of its divisors is an integer number (34848).

2³⁴⁵²¹⁹ is an apocalyptic number.

345219 is a deficient number, since it is larger than the sum of its proper divisors (212349).

345219 is a wasteful number, since it uses less digits than its factorization.

345219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994.

The product of its digits is 1080, while the sum is 24.

The square root of 345219 is about 587.5534018283. The cubic root of 345219 is about 70.1506280227.

It can be divided in two parts, 34 and 5219, that added together give a triangular number (5253 = T₁₀₂).

The spelling of 345219 in words is "three hundred forty-five thousand, two hundred nineteen".