345207323 has 2 divisors, whose sum is σ = 345207324. Its totient is φ = 345207322.

The previous prime is 345207277. The next prime is 345207337. The reversal of 345207323 is 323702543.

It is a strong prime.

It is an emirp because it is prime and its reverse (323702543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345207323 - 2⁶ = 345207259 is a prime.

It is not a weakly prime, because it can be changed into another prime (345207623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172603661 + 172603662.

It is an arithmetic number, because the mean of its divisors is an integer number (172603662).

Almost surely, 2^345207323 is an apocalyptic number.

345207323 is a deficient number, since it is larger than the sum of its proper divisors (1).

345207323 is an equidigital number, since it uses as much as digits as its factorization.

345207323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 29.

The square root of 345207323 is about 18579.7557303642. The cubic root of 345207323 is about 701.4983706770.

Adding to 345207323 its reverse (323702543), we get a palindrome (668909866).

The spelling of 345207323 in words is "three hundred forty-five million, two hundred seven thousand, three hundred twenty-three".