345213443 has 4 divisors (see below), whose sum is σ = 345366288. Its totient is φ = 345060600.

The previous prime is 345213439. The next prime is 345213469. The reversal of 345213443 is 344312543.

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

It is a cyclic number.

It is not a de Polignac number, because 345213443 - 2² = 345213439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345213643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72983 + ... + 77568.

It is an arithmetic number, because the mean of its divisors is an integer number (86341572).

Almost surely, 2^345213443 is an apocalyptic number.

345213443 is a deficient number, since it is larger than the sum of its proper divisors (152845).

345213443 is a wasteful number, since it uses less digits than its factorization.

345213443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152844.

The product of its digits is 17280, while the sum is 29.

The square root of 345213443 is about 18579.9204250180. The cubic root of 345213443 is about 701.5025161517.

Adding to 345213443 its reverse (344312543), we get a palindrome (689525986).

The spelling of 345213443 in words is "three hundred forty-five million, two hundred thirteen thousand, four hundred forty-three".