345424223 has 2 divisors, whose sum is σ = 345424224. Its totient is φ = 345424222.

The previous prime is 345424217. The next prime is 345424229. The reversal of 345424223 is 322424543.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (345424217) and next prime (345424229).

It is a cyclic number.

It is not a de Polignac number, because 345424223 - 2¹⁸ = 345162079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345424229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172712111 + 172712112.

It is an arithmetic number, because the mean of its divisors is an integer number (172712112).

Almost surely, 2^345424223 is an apocalyptic number.

345424223 is a deficient number, since it is larger than the sum of its proper divisors (1).

345424223 is an equidigital number, since it uses as much as digits as its factorization.

345424223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23040, while the sum is 29.

The square root of 345424223 is about 18585.5918119386. The cubic root of 345424223 is about 701.6452612848.

Adding to 345424223 its reverse (322424543), we get a palindrome (667848766).

The spelling of 345424223 in words is "three hundred forty-five million, four hundred twenty-four thousand, two hundred twenty-three".