345305212 has 24 divisors (see below), whose sum is σ = 695659104. Its totient is φ = 146906112.

The previous prime is 345305209. The next prime is 345305251. The reversal of 345305212 is 212503543.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41173 + ... + 48844.

It is an arithmetic number, because the mean of its divisors is an integer number (28985796).

Almost surely, 2^345305212 is an apocalyptic number.

It is an amenable number.

345305212 is an abundant number, since it is smaller than the sum of its proper divisors (350353892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345305212 is a wasteful number, since it uses less digits than its factorization.

345305212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90165 (or 90163 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 345305212 is about 18582.3898355405. The cubic root of 345305212 is about 701.5646713990.

Adding to 345305212 its reverse (212503543), we get a palindrome (557808755).

The spelling of 345305212 in words is "three hundred forty-five million, three hundred five thousand, two hundred twelve".