345503219 has 2 divisors, whose sum is σ = 345503220. Its totient is φ = 345503218.

The previous prime is 345503209. The next prime is 345503267. The reversal of 345503219 is 912305543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345503219 - 2¹⁶ = 345437683 is a prime.

It is a super-3 number, since 3×345503219³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345503209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172751609 + 172751610.

It is an arithmetic number, because the mean of its divisors is an integer number (172751610).

Almost surely, 2^345503219 is an apocalyptic number.

345503219 is a deficient number, since it is larger than the sum of its proper divisors (1).

345503219 is an equidigital number, since it uses as much as digits as its factorization.

345503219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 345503219 is about 18587.7168850830. The cubic root of 345503219 is about 701.6987442589.

The spelling of 345503219 in words is "three hundred forty-five million, five hundred three thousand, two hundred nineteen".