30312122321 has 16 divisors (see below), whose sum is σ = 34407287040. Its totient is φ = 26472769920.

The previous prime is 30312122299. The next prime is 30312122327. The reversal of 30312122321 is 12322121303.

It is not a de Polignac number, because 30312122321 - 2³⁰ = 29238380497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30312122293 and 30312122302.

It is not an unprimeable number, because it can be changed into a prime (30312122327) 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, 107336 + ... + 268598.

It is an arithmetic number, because the mean of its divisors is an integer number (2150455440).

Almost surely, 2^30312122321 is an apocalyptic number.

It is an amenable number.

30312122321 is a deficient number, since it is larger than the sum of its proper divisors (4095164719).

30312122321 is a wasteful number, since it uses less digits than its factorization.

30312122321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162056.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 30312122321 its reverse (12322121303), we get a palindrome (42634243624).

The spelling of 30312122321 in words is "thirty billion, three hundred twelve million, one hundred twenty-two thousand, three hundred twenty-one".