345330021 has 8 divisors (see below), whose sum is σ = 460537920. Its totient is φ = 230171072.

The previous prime is 345329953. The next prime is 345330023. The reversal of 345330021 is 120033543.

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 345330021 - 2¹¹ = 345327973 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 345330021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345330023) 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 7 ways as a sum of consecutive naturals, for example, 10000 + ... + 28118.

It is an arithmetic number, because the mean of its divisors is an integer number (57567240).

Almost surely, 2^345330021 is an apocalyptic number.

It is an amenable number.

345330021 is a deficient number, since it is larger than the sum of its proper divisors (115207899).

345330021 is a wasteful number, since it uses less digits than its factorization.

345330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24475.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 345330021 is about 18583.0573641691. The cubic root of 345330021 is about 701.5814726717.

Adding to 345330021 its reverse (120033543), we get a palindrome (465363564).

The spelling of 345330021 in words is "three hundred forty-five million, three hundred thirty thousand, twenty-one".