16030345321 has 3 divisors (see below), whose sum is σ = 16030471933. Its totient is φ = 16030218710.

The previous prime is 16030345307. The next prime is 16030345339. The reversal of 16030345321 is 12354303061.

The square root of 16030345321 is 126611.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 16030345321 - 2⁷ = 16030345193 is a prime.

It is a super-3 number, since 3×16030345321³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16030345321.

It is not an unprimeable number, because it can be changed into a prime (16030345361) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 63306 + ... + 189916.

Almost surely, 2^16030345321 is an apocalyptic number.

16030345321 is the 126611-st square number.

16030345321 is the 63306-th centered octagonal number.

It is an amenable number.

16030345321 is a deficient number, since it is larger than the sum of its proper divisors (126612).

16030345321 is an frugal number, since it uses more digits than its factorization.

16030345321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253222 (or 126611 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 16030345321 its reverse (12354303061), we get a palindrome (28384648382).

The spelling of 16030345321 in words is "sixteen billion, thirty million, three hundred forty-five thousand, three hundred twenty-one".