345223457 has 4 divisors (see below), whose sum is σ = 345886596. Its totient is φ = 344560320.

The previous prime is 345223451. The next prime is 345223481. The reversal of 345223457 is 754322543.

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

It can be written as a sum of positive squares in 2 ways, for example, as 176119441 + 169104016 = 13271^2 + 13004^2 .

It is a cyclic number.

It is not a de Polignac number, because 345223457 - 2¹⁸ = 344961313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345223451) 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, 330788 + ... + 331829.

It is an arithmetic number, because the mean of its divisors is an integer number (86471649).

Almost surely, 2^345223457 is an apocalyptic number.

It is an amenable number.

345223457 is a deficient number, since it is larger than the sum of its proper divisors (663139).

345223457 is an equidigital number, since it uses as much as digits as its factorization.

345223457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663138.

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

The square root of 345223457 is about 18580.1899075332. The cubic root of 345223457 is about 701.5092991805.

The spelling of 345223457 in words is "three hundred forty-five million, two hundred twenty-three thousand, four hundred fifty-seven".