345043423 has 4 divisors (see below), whose sum is σ = 356173888. Its totient is φ = 333912960.

The previous prime is 345043399. The next prime is 345043427. The reversal of 345043423 is 324340543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324340543 = 557 ⋅582299.

It is a cyclic number.

It is not a de Polignac number, because 345043423 - 2⁹ = 345042911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345043391 and 345043400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345043427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5565186 + ... + 5565247.

It is an arithmetic number, because the mean of its divisors is an integer number (89043472).

Almost surely, 2^345043423 is an apocalyptic number.

345043423 is a deficient number, since it is larger than the sum of its proper divisors (11130465).

345043423 is a wasteful number, since it uses less digits than its factorization.

345043423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11130464.

The product of its (nonzero) digits is 17280, while the sum is 28.

The square root of 345043423 is about 18575.3444920949. The cubic root of 345043423 is about 701.3873322986.

Adding to 345043423 its reverse (324340543), we get a palindrome (669383966).

The spelling of 345043423 in words is "three hundred forty-five million, forty-three thousand, four hundred twenty-three".