305345344321 has 16 divisors (see below), whose sum is σ = 313746554880. Its totient is φ = 297064207440.

The previous prime is 305345344309. The next prime is 305345344373. The reversal of 305345344321 is 123443543503.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 305345344321 - 2⁵ = 305345344289 is a prime.

It is a super-3 number, since 3×305345344321³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (305345344391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2782720 + ... + 2890366.

It is an arithmetic number, because the mean of its divisors is an integer number (19609159680).

Almost surely, 2^305345344321 is an apocalyptic number.

It is an amenable number.

305345344321 is a deficient number, since it is larger than the sum of its proper divisors (8401210559).

305345344321 is a wasteful number, since it uses less digits than its factorization.

305345344321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108204.

The product of its (nonzero) digits is 259200, while the sum is 37.

Adding to 305345344321 its reverse (123443543503), we get a palindrome (428788887824).

The spelling of 305345344321 in words is "three hundred five billion, three hundred forty-five million, three hundred forty-four thousand, three hundred twenty-one".