345340213 has 4 divisors (see below), whose sum is σ = 345790060. Its totient is φ = 344890368.

The previous prime is 345340211. The next prime is 345340223. The reversal of 345340213 is 312043543.

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 99540529 + 245799684 = 9977^2 + 15678^2 .

It is a cyclic number.

It is not a de Polignac number, because 345340213 - 2¹ = 345340211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345340211) 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, 223770 + ... + 225307.

It is an arithmetic number, because the mean of its divisors is an integer number (86447515).

Almost surely, 2^345340213 is an apocalyptic number.

It is an amenable number.

345340213 is a deficient number, since it is larger than the sum of its proper divisors (449847).

345340213 is an equidigital number, since it uses as much as digits as its factorization.

345340213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449846.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 345340213 is about 18583.3315904334. The cubic root of 345340213 is about 701.5883747148.

Adding to 345340213 its reverse (312043543), we get a palindrome (657383756).

The spelling of 345340213 in words is "three hundred forty-five million, three hundred forty thousand, two hundred thirteen".