345457223 has 2 divisors, whose sum is σ = 345457224. Its totient is φ = 345457222.

The previous prime is 345457219. The next prime is 345457237. The reversal of 345457223 is 322754543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345457223 - 2² = 345457219 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345457423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172728611 + 172728612.

It is an arithmetic number, because the mean of its divisors is an integer number (172728612).

Almost surely, 2^345457223 is an apocalyptic number.

345457223 is a deficient number, since it is larger than the sum of its proper divisors (1).

345457223 is an equidigital number, since it uses as much as digits as its factorization.

345457223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 35.

The square root of 345457223 is about 18586.4795752181. The cubic root of 345457223 is about 701.6676043968.

The spelling of 345457223 in words is "three hundred forty-five million, four hundred fifty-seven thousand, two hundred twenty-three".