345216227 has 4 divisors (see below), whose sum is σ = 350368776. Its totient is φ = 340063680.

The previous prime is 345216199. The next prime is 345216239. The reversal of 345216227 is 722612543.

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 345216227 - 2²⁰ = 344167651 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 345216193 and 345216202.

It is not an unprimeable number, because it can be changed into a prime (345216247) 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, 2576174 + ... + 2576307.

It is an arithmetic number, because the mean of its divisors is an integer number (87592194).

Almost surely, 2^345216227 is an apocalyptic number.

345216227 is a deficient number, since it is larger than the sum of its proper divisors (5152549).

345216227 is an equidigital number, since it uses as much as digits as its factorization.

345216227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5152548.

The product of its digits is 20160, while the sum is 32.

The square root of 345216227 is about 18579.9953444558. The cubic root of 345216227 is about 701.5044019200.

The spelling of 345216227 in words is "three hundred forty-five million, two hundred sixteen thousand, two hundred twenty-seven".