345211215 has 32 divisors (see below), whose sum is σ = 573281280. Its totient is φ = 177174144.

The previous prime is 345211213. The next prime is 345211241. The reversal of 345211215 is 512112543.

It is a happy number.

It is not a de Polignac number, because 345211215 - 2¹ = 345211213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345211213) 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 in 31 ways as a sum of consecutive naturals, for example, 149802 + ... + 152088.

It is an arithmetic number, because the mean of its divisors is an integer number (17915040).

Almost surely, 2^345211215 is an apocalyptic number.

345211215 is a deficient number, since it is larger than the sum of its proper divisors (228070065).

345211215 is a wasteful number, since it uses less digits than its factorization.

345211215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671.

The product of its digits is 1200, while the sum is 24.

The square root of 345211215 is about 18579.8604677215. The cubic root of 345211215 is about 701.5010069878.

Adding to 345211215 its reverse (512112543), we get a palindrome (857323758).

The spelling of 345211215 in words is "three hundred forty-five million, two hundred eleven thousand, two hundred fifteen".