345001223 has 4 divisors (see below), whose sum is σ = 394287120. Its totient is φ = 295715328.

The previous prime is 345001211. The next prime is 345001249. The reversal of 345001223 is 322100543.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 345001223 - 2⁶ = 345001159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345001195 and 345001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345001253) 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, 24642938 + ... + 24642951.

It is an arithmetic number, because the mean of its divisors is an integer number (98571780).

Almost surely, 2^345001223 is an apocalyptic number.

345001223 is a deficient number, since it is larger than the sum of its proper divisors (49285897).

345001223 is an equidigital number, since it uses as much as digits as its factorization.

345001223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49285896.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 345001223 is about 18574.2085430308. The cubic root of 345001223 is about 701.3587371033.

Adding to 345001223 its reverse (322100543), we get a palindrome (667101766).

The spelling of 345001223 in words is "three hundred forty-five million, one thousand, two hundred twenty-three".