345423 has 16 divisors (see below), whose sum is σ = 526176. Its totient is φ = 199680.

The previous prime is 345413. The next prime is 345431. The reversal of 345423 is 324543.

It is a happy number.

It is not a de Polignac number, because 345423 - 2¹⁷ = 214351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 345423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403 + ... + 923.

It is an arithmetic number, because the mean of its divisors is an integer number (32886).

2³⁴⁵⁴²³ is an apocalyptic number.

345423 is a deficient number, since it is larger than the sum of its proper divisors (180753).

345423 is a wasteful number, since it uses less digits than its factorization.

345423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554.

The product of its digits is 1440, while the sum is 21.

The square root of 345423 is about 587.7269774308. The cubic root of 345423 is about 70.1644433208.

Adding to 345423 its reverse (324543), we get a palindrome (669966).

The spelling of 345423 in words is "three hundred forty-five thousand, four hundred twenty-three".