30313112321 has 4 divisors (see below), whose sum is σ = 30315183444. Its totient is φ = 30311041200.

The previous prime is 30313112311. The next prime is 30313112387. The reversal of 30313112321 is 12321131303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30089759296 + 223353025 = 173464^2 + 14945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30313112321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30313112293 and 30313112302.

It is not an unprimeable number, because it can be changed into a prime (30313112311) 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, 1013450 + ... + 1042931.

It is an arithmetic number, because the mean of its divisors is an integer number (7578795861).

Almost surely, 2^30313112321 is an apocalyptic number.

It is an amenable number.

30313112321 is a deficient number, since it is larger than the sum of its proper divisors (2071123).

30313112321 is a wasteful number, since it uses less digits than its factorization.

30313112321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071122.

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

Adding to 30313112321 its reverse (12321131303), we get a palindrome (42634243624).

The spelling of 30313112321 in words is "thirty billion, three hundred thirteen million, one hundred twelve thousand, three hundred twenty-one".