342216321 has 8 divisors (see below), whose sum is σ = 456513024. Its totient is φ = 228031920.

The previous prime is 342216313. The next prime is 342216323. The reversal of 342216321 is 123612243.

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

It is not a de Polignac number, because 342216321 - 2³ = 342216313 is a prime.

It is a super-2 number, since 2×342216321² = 234224020717550082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 342216291 and 342216300.

It is not an unprimeable number, because it can be changed into a prime (342216323) 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, 20686 + ... + 33351.

It is an arithmetic number, because the mean of its divisors is an integer number (57064128).

Almost surely, 2^342216321 is an apocalyptic number.

It is an amenable number.

342216321 is a deficient number, since it is larger than the sum of its proper divisors (114296703).

342216321 is a wasteful number, since it uses less digits than its factorization.

342216321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56151.

The product of its digits is 1728, while the sum is 24.

The square root of 342216321 is about 18499.0897343626. The cubic root of 342216321 is about 699.4664785013.

Adding to 342216321 its reverse (123612243), we get a palindrome (465828564).

The spelling of 342216321 in words is "three hundred forty-two million, two hundred sixteen thousand, three hundred twenty-one".