345342215 has 4 divisors (see below), whose sum is σ = 414410664. Its totient is φ = 276273768.

The previous prime is 345342209. The next prime is 345342227. The reversal of 345342215 is 512243543.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512243543 = 7 ⋅73177649.

It is a cyclic number.

It is not a de Polignac number, because 345342215 - 2⁸ = 345341959 is a prime.

It is a super-2 number, since 2×345342215² = 238522490922212450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 34534217 + ... + 34534226.

It is an arithmetic number, because the mean of its divisors is an integer number (103602666).

Almost surely, 2^345342215 is an apocalyptic number.

345342215 is a deficient number, since it is larger than the sum of its proper divisors (69068449).

345342215 is an equidigital number, since it uses as much as digits as its factorization.

345342215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69068448.

The product of its digits is 14400, while the sum is 29.

The square root of 345342215 is about 18583.3854558312. The cubic root of 345342215 is about 701.5897304573.

Adding to 345342215 its reverse (512243543), we get a palindrome (857585758).

The spelling of 345342215 in words is "three hundred forty-five million, three hundred forty-two thousand, two hundred fifteen".