345043253 has 2 divisors, whose sum is σ = 345043254. Its totient is φ = 345043252.

The previous prime is 345043229. The next prime is 345043261. The reversal of 345043253 is 352340543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311946244 + 33097009 = 17662^2 + 5753^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345043253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345043213) 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, 172521626 + 172521627.

It is an arithmetic number, because the mean of its divisors is an integer number (172521627).

Almost surely, 2^345043253 is an apocalyptic number.

It is an amenable number.

345043253 is a deficient number, since it is larger than the sum of its proper divisors (1).

345043253 is an equidigital number, since it uses as much as digits as its factorization.

345043253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 29.

The square root of 345043253 is about 18575.3399161361. The cubic root of 345043253 is about 701.3872171093.

Adding to 345043253 its reverse (352340543), we get a palindrome (697383796).

The spelling of 345043253 in words is "three hundred forty-five million, forty-three thousand, two hundred fifty-three".