345223121 has 8 divisors (see below), whose sum is σ = 348288864. Its totient is φ = 342164160.

The previous prime is 345223117. The next prime is 345223129. The reversal of 345223121 is 121322543.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 345223121 - 2² = 345223117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345223129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193385 + ... + 195161.

It is an arithmetic number, because the mean of its divisors is an integer number (43536108).

Almost surely, 2^345223121 is an apocalyptic number.

It is an amenable number.

345223121 is a deficient number, since it is larger than the sum of its proper divisors (3065743).

345223121 is a wasteful number, since it uses less digits than its factorization.

345223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391.

The product of its digits is 1440, while the sum is 23.

The square root of 345223121 is about 18580.1808656428. The cubic root of 345223121 is about 701.5090715915.

Adding to 345223121 its reverse (121322543), we get a palindrome (466545664).

The spelling of 345223121 in words is "three hundred forty-five million, two hundred twenty-three thousand, one hundred twenty-one".