30312113321 has 4 divisors (see below), whose sum is σ = 34642415232. Its totient is φ = 25981811412.

The previous prime is 30312113311. The next prime is 30312113341. The reversal of 30312113321 is 12331121303.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12331121303 = 593 ⋅20794471.

It is a cyclic number.

It is not a de Polignac number, because 30312113321 - 2³⁰ = 29238371497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30312113293 and 30312113302.

It is not an unprimeable number, because it can be changed into a prime (30312113311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2165150945 + ... + 2165150958.

It is an arithmetic number, because the mean of its divisors is an integer number (8660603808).

Almost surely, 2^30312113321 is an apocalyptic number.

It is an amenable number.

30312113321 is a deficient number, since it is larger than the sum of its proper divisors (4330301911).

30312113321 is an equidigital number, since it uses as much as digits as its factorization.

30312113321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4330301910.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 30312113321 its reverse (12331121303), we get a palindrome (42643234624).

The spelling of 30312113321 in words is "thirty billion, three hundred twelve million, one hundred thirteen thousand, three hundred twenty-one".